29 weeks pregnant, is this normal?

My vagina muscles are extremely weak. I have to pee constantly or have this urge to pee constantly. I also feel her extremely low and almost feels like she’s going to fall out? Any penetration hurts so bad and I’m unsure if it’s something to bring up to doctor or if it’s normal. I had a exam around 20 weeks and they said my cervix felt open, but ultrasound showed it was closed and in normal range. I try doing kegals often, however it almost hurts to do them. Baby is really active.