migraine
"I'm 3.5 months pregnant and had been suffering from the worst migraine I'd ever experienced for 2 days.  I finally went to urgent care as instructed by my OB.  They gave me an injection of imitrex.  The side effects suck.  I felt dioriented and my head felt heavy.  I was sweating.  After about 20 minutes, the side effects subsided a bit and I was able to go. It is now 2 hours later and I feel 100 times better. My migraine is basically gone.  If you can deal with the side effects, its worth it."