Imitrex and magnesium

I no longer take Imitrex as it makes my migraines 100x worse, more frequent; but I was reading following side affects everyone has.... Ive dealt with the queasiness, feeling lethargic and such....

But some of the ones not listed that I had was extreme abdominal and stomach cramping where I was in fetal position (i kid you not), my back felt as if i had a warm heating pad to it (kind of a benefit on cold days!) and from the calves down, I felt as if I were walking around with 25 pound weights on both legs; I felt very weak and could barely move.

Anybody ever experience any of this!? :(

I had a shot of Imitrex in the hospital for a migraine and it made me feel like my head was on fire!!! I hated it so much. They gave it to me as a perscription in pill from the next day so I thought maybe since the other one was a shot this wouldn't be so bad. I took it with my husband home because I was afraid to take it alone. I felt fine for the first 10 min then my head started to burn and my whole body started to ache and I could not fall asleep it was horrible!! It got rid of my headache but I rather have the head ache than having my body feel like its dying!!