I'm miserable....anyone else?

FirstTimePregnancy

I have been absolutely miserable through my entire pregnancy!  The first trimester was all-day nausea (who called in morning sickness in the first place).  Second trimester I was sick the entire time with every cold and bug that went around - was actually out of work for 2 weeks at one point.  Now that I am in my third trimester I am having major issues with my sciatic nerve and terrible lower back pain.  My OB had me start physical therapy on Monday.  I hate to say it, but I am not a fan of being pregnant and think that this may be our first AND last child.  Is anyone else finding pregnancy to be a miserable experience?  I know it will all be worth it in the end - but it's getting there that is killing me!