Is this normal? HELP (3rd trimester)

Lauren • You get what you give.
I've been having terrible, sharp pains in my upper abdomen, pelvic area, and back since around 10 last night (17 hrs or so). 
It's constant and sharpens when I twist my body or try to sit up. 
Is this something anyone else has experienced? Is it normal or does it point to an issue I should address?
I hate to go into my doctor, because I was just in there a couple days ago for possibly going into early labor (I wasn't but I was cramping 7x or more each hour so they wanted me to come in).
If it matters, I'm 1cm dilated and 50% effaced. I am 32 weeks and 5 days.