NEED ANSWERS NOW!

Everything was fine until now, I always lay on my left side, (which is good while pregnant apparently) & then I started getting pains all in my left side, almost like poop cramps but I don't have to poop & I already did, so I tried laying on my back, it got worse, my right side, still didn't help. Now the pain is all over my lower back & all around my pantie line, starting to feel like period cramps, the pain is making me wanna puke, but not bad enough to cry. Lol. Idk what to do, I don't wanna freak out if it's nothing. 27 weeks pregnant.