Heart irregularities symptoms and conditions

Does anyone here ever had any tingling issues? I had total thyroidectomy in Feb. 2009. Felt good the first month or two and have gone down from there! Some days are good, some are bad. Never know from day to day how Im going to feel! I started out for about a month and a 1/2 on 125 levothyroxin.....then my doc lowered it to 100.......as of July 14th, Im now taking .88. The tingling Im getting is all over my body, different places, here and there. Ive had some heart rate issues for a couple of months now too and finally had my regular doc send to me see a heart doctor.
Thought maybe the tingling could be from low calcium.....it was normal, CBC was normal, ECHO was normal.....waiting on the holter test results right now. The heart doc gave me a prescription for Toprol. I told him I wasn't going to take it cuz sometimes my heart feels like its barely beating and Im afraid it will make it worse. Im glad I didn't get it! Ive read of too many side effects.
Palpitations, kinda fast heart beat with pounding.....sometimes it feels likes its barely beating! Most of this occurs when first laying down......every now and then while sitting, etc. I do not exercise.....and should but just don't find the time. I switched jobs around the time I found out I had several nodes on each side of my thyroid. I was getting tired a lot and just thought i worked too much. I went from a physical job to a sit down, 12 hour, graveyard shift. Since the surgery, Ive felt it more. Im tired of feeling like crap all the time......I was already going thru some perimenopause stuff before all of this! Before I ever found out about my thyroid, I did have real light pounding of heart when laying down and tingling every blue moon, but very mild as well.
Now with no thyroid.......and medicines with all the side effects......IM GOING NUTS!!! Right now the moodiness and tingling are whats bothering me the most. Some days Im really tired, others Im ok. My body gets hot off and on, no fever. The past 3 days my calves, feet, and ankles have started to swell........never before! Plus I get some throbs and pains in my legs and arms and under my arms here and there. I probably need a new doc and I change of medicine......but Im afraid.
For one, Ive decided to go back to a physical job........and hopefully it wont screw with my heart rate even more. Ive read up on tingling........Im guessing maybe its from all the damn stress since my calcium was normal. Does anyone here have any suggestions?????

I have been taking Singulair since November 08. Over the six months I noticed that I was suffering from depression and increased anxiety, plus an irregular heart rhythm. I experienced nightmares on an almost nightly basis. I have since stopped the medication - the nightmares have gone, the depression and anxiety improve everyday. Hopefully, this will also resolve the heart irregularities.

I'm a 53 year-old male and do regular Cardio Exercise every week and have for 31 years.
A cardiologist put me on Toprol XL 25 MG on November 22nd. The Doctor prescribed it because I add heart irregularities and palpitations which resulted in me going to the hospital as I didn't know what was happening and never had heart palpitations before in my life. I went to the emergency room and they got me stabilized but brought in cardiologist. My heart returned to normal function in a few hours and was result of taking a decongestant as well as Lisinopril 5 MG. I had just started these drugs and had been on them for three days when the heart palpitation instance happened. The decongestant is ... I had done a two hour hard workout at the gym which I do regularly 3 times per week and then the heart irregularities started on day 3 of taking the two drugs. A cardiologists now has stuck me on this Toprol 25 MG after that day because it helps with irregular heart beat plus my blood pressure was a bit high around 140/90. I immediately started noticing side effects from the Toprol 25 MG but stayed on it plus the Lisinopril 5 MG and 325 MG Aspirin for about 12 days at that dose. I started side effects like tremors, tiredness, constipation, strange dreams, anxiousness, impotence, and struggled to do my workouts etc. I made some lifestyle changes like eliminating caffeine, alcohol, etc and that plus the medicine reduced my blood pressure below 120/80 a bit. I stopped the Lisinopril on December 3rd and my blood pressure is still normal and reduced the Toprol to 12.5 MG at the same time. I did research and the doctor also thinks the irregularity was due to the Decongestant and Lisinopril I had taken for 3 days as both have heart irregularity and palpitations as a side effect. I decided I want to get off the Toprol XL altogether and let my body go back to normal functioning. All my problems were brought once I started taking medicine and the only real problem I have is high blood pressure which I can control now with life style changes and natural supplements. I called the cardiologist's nurse and she said not to do anything until I see the doctor on December 18th. I had already decided to cut the dose in half to 12.5 MG on December 3rd anyway and the side effects got better, but then I had instance the other night after taking a spin class at the gym whereby my heart beat stayed up around 82 bpm for several hours and normally is 59 pbm. I also felt anxious and couldn't get settled to sleep real well. I read on the warning label that your not supposed to work out during the process of reducing the dosage so I guess I will have to stop working out until I'm off this stuff. I have been an exercise person for 31 years doing at least 5 hours of Cardio Exercise per week and then racing bicycles in the summer months doing 10-12 hours of Cardio Exercise. I really want off this drug so I reduced to 6.25 MG today and will stop working out I guess until I'm off. I feel a little shaky and feel sort of like I could faint if I did to much exertion since reducing to 6.25 MG today. I was wondering how long it take to get off this Toprol since I was only on it for 12 days at the 25 MG dosage and should I keep cutting the dosage and go down to 3.12 MG after a few more days and then eventually off after a few days at 3.12 MG? Then how long once I'm off should I wait to return to my rigorous exercise routine?

On December 5th, I reported that, after stopping the Metoprolol, I was having some minor withdrawal symptoms. As an update, this week has not been good. I've had tightness in the chest, sleeping poorly and some gastric problems. It is now three weeks since the last dose. How long does it take to become symptom free?????