I've been taking Paxil 30mgs and Elavil (first 10 mgs then switch...

I've been taking Paxil 30mgs and Elavil (first 10 mgs then switched to 25mgs) for the past 12 years. I was diagnosed with depression at age 16, 18 years ago. First I was on Norpramine, then Deserel, then Prozac. I was put on Paxil and Elavil because of horrific migraines where nothing worked to help them, at one point I could not open my eyes. Occasionally I experience not being able to urinate as quickly as usual but I really haven't had much else. If I were to go off it, the first side effect I get is terrible itching on my back, then trouble breathing, like there is a weight on my chest. Right now I'm trying to get off Nuerontin, and hopefully some day both the depressants but I'm not optimistic since no doctor ever has been able to explain why the horrific migraines are there.