i was prescribed sumatriptan 50mg (imtrex) by my doctor for migraine attacks. The first time i took a pill, my face swelled up within a few minutes- within 5 it was bright red, puffy, hot to the touch and i was in absolute agony. My eyes were burning and slightly puffy and my muscles felt weak and floppy. worst part my head still really really hurtđ!! has anyone else had this happen?