Early labour?

Im 35 weeks tomorrow, and since yesterday ive been having an achey feeling all over my stomach. It feels like when you're due onto your period but not as strong if you get me. I also feel alot of pressure in my hip area I've just had to have a warm bath to try and ease it, ive also had to wee alot more today every time i stood up my bladder would just feel full! Could baby just be laying really low down in my pelvis causing me discomfort?