I had a scare this afternoon getting my son off the bus. Some idiot ran through the flashing lights…

I had a scare this afternoon getting my son off the bus. Some idiot ran through the flashing lights going about 70 as I was standing on the side of the road getting ready to walk across. He slung rocks at me and everything. It scared me so bad I didn't know what else to do but cry. I've been having small contractions every 30 min since about 7. They aren't too painful only about 4 or 4.5 and don't last that long. Should I go get checked ?