Period like cramping

Hi gals, I know this is a pretty common topic posted these days but I wanted to ask for myself. I woke up with crazy bad period like cramping, mostly on my right side. It's actually making me feel kinda sick. I've taken a hot shower, downed a bunch of water and tried to get more sleep and it's still there when I woke. I'm 35 weeks on Monday and torn if I should go to my hospital to get checked out, but of course, would like to save the trip if necessary. Haven't lost my mucus plug, no bleeding or leaking, but I can definitely feel something going on against my cervix with these cramps. Any suggestions?