Contractions and now lower pelvis is sore

Kayla

So I had contractions last Sunday at 35 weeks 5 days, they were 9-10 minutes apart but last only about an hour but never progressed. All week, now at 36 weeks 5 days I have been super sore, I know it’s muscle and the best way to describe it is working out the muscle that hasn’t been used in a long time. But now it’s to the point, on my left side, only below/next to hip bone, that if I have sat for a long time or while sleeping, I sleep kinda curled up, and I stretch or get up I get shooting pain. I told my doctor at 36 weeks I was sore but this pain has gotten worse. I plan on calling the doctor office in the morning but any idea on what this pain can be?