Synthroid and diarrhea

I have been on Levothyroxene for 14 months now. I have been experiencing nightmares, a "butterfly" feeling between my chest and stomach, itchy skin, dizziness, and am still fatigued. My dose is 50mcg. once a day. that was upped from 25 mcg. a day as my TSH level was not within the normal range. Sometimes I feel like I'm feeling WORSE after being put on Levothyroxene. I also am still gaining weight and am constantly bloated, having bouts of diarrhea, and my blood pressure won't stay regulated. I am currently recuperating from a bad cold and the cough is hanging on. My other meds I take are Atenolol-12.5 mg. once a day and Xanax-.25 mg. two to three times a day. Is there an interaction between all these meds(I take them at different intervals thruout the day to avoid interactions)?

Extreme itching all over body, insomnia, weight gain, psoriasis, high blood pressure, rapid thoughts and speech, water weight gain, swelling, diarrhea, mood swings, gall bladder removal, irregular periods, fibroid cysts in uterus, heavy period bleeding and clotting. Miserable everyday!

I have began Levo .1 and started having heart palpitations , chronic anxiety, and diarrhea, bloating miserable. I lowered the dose to 0.50 and still continue to experience the palps. I went to the doctor at urgent care yesterday and we decide to lower the levo to 0.025 in the am and 0.025 in the pm to see if that helps for a while. Hears hoping that it works. The side effects on here are terrible. I hope that mine go away after I get adjusted to the dose or quit it all together. It is harad denoughg to deal with a total thyroidectomy then a RAI 131 treatment now this crap! It makes you wonder if you are ever gonna feel normal again?
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stomach cramps, diarrhea, headache and muscle weakness and fever. I have been on this medication for two weeks.