Levoxyl and moring

I have been taking Levoxyl for about 2 years. I have told my Endo doctor many that I have had headaches, nausea, stomach pains and have gained 40+ pounds in the 2 years. Every time I go in to review my blood tests and tell her I'm not feeling right I get the same respondents as a lot of you; they are you sure you are not pregnant? you need to change your diet and eat right? you exercising enough?...The Dr always seems to ignore my symptoms. The last 4 weeks have been Hell for me...I woke up one morning thinking my stomach was going to burst. I went to the Er. They did an ultrasound...found nothing..gave me stomach reflux meds and I went home. 2 days later the pain was a lot stronger right under the center below my rib cage. Went back to the er. They gave me more protonics and gave me a gi dr. I went to the GI doctor and got a contrast scan and then a scope. They of course found NOTHING. A week later I woke up again with the worst pain yet and the cold sweats...to the point where I was going to pass out...Went back to the Er where they gave me a cat scan. Everything was perfect the er doctor said. "They said they couldn't tell me what was wrong". I knew I wasn't going crazy and having all these symptoms but no one could explain why or what is was. I was getting fed up of being sick...So I took my Levoxyl like I do every morning and within 15 mins the pain was back. I went online to look up the side effects of Levoxyl and found this site. Its great to know that I am not the only one out there with these side effects from this medication and am not going crazy! I made an apt with my Endo Dr today called and told her this med was making me sick. She made me have an apt with her assistant. I printed off this page to show her I wasn't alone. As of today I am off of Levoxyl. Thanks to the new Dr who FINALLY listened to me. I do not have to take any other form of this med either. Since I just had a nodule not hypothyroidism. Please Can anyone tell me what they went through from withdrawal from this medication? and anything that helped it go away? and How long did the "detox" from Levoxyl last?