Girls, how often does your belly ache or have you been experiencing it…

Girls, how often does your belly ache or have you been experiencing it since 27-28 weeks? I get it when I stand for long periods, or go out, then on my side I feel it harden for a few seconds, and also when I want to pee small after that, but this has always been the case before and after urination, but now it's become very frequent, sometimes just lying on my side and it hardened, there is no pain, but I start worrying something (I talked to the doctor a couple of days ago, she says it's fine ??‍♀️)