Any suggestions for cramping and pelvic pressure. Almost 30 weeks, it feels like I am on a bad…

Any suggestions for cramping and pelvic pressure. Almost 30 weeks, it feels like I am on a bad period and has been since yesterday. (side note, I was on bed rest since mid January and as of Thursday the specialist said I could start running an errand or 2 a day since I was doing well, maybe I did too much?! Heating pad isn't helping)