Contractions

I've been having them all day with low back pain and some pressure. I think it's nothing, but it sure is annoying. If I'm still having them tomorrow, I will have to call Kate. I'm hoping I have a urinary tract infection which is causing this. Tonight I'm going to take an antibiotic thatI got with my last UTI. I usually have braxton hicks from around 16 weeks on. So I'm wondering if my uterus is just making up for lost time. Riley is moving all around which is causing more pain.