They may just be braxton hicks! But if they continue... id go to the hospital.
I have a friend and around that time she started having contractions and she went to the doctor and she was dialated so they had to give her a cervical stitch and she needed to be on bed rest. I'd say call L&D and tell them how far along you are and tell them you have contractions and see what they say. I wouldn't wait it out to see just because it can be normal and nothing to worry about.
I dont really pay attention to it because with my other daughter it turned out to be Braxton hicks but now you left me thinking if I keep having them I'll have to go check everything is ok. thank you both.