Just want to know..?

Hi everyone..,

I am 35w6d pregnant by tomorrow I will be 36w.....i know in last few weeks frequent urination will be there but from past 1week when I am walking I feel urge to pee and pinching feeling pressure &shooting pains in my bladder....is it because of baby is getting to head down position? because baby weight's 6 lbs 7oz and breech position in 32weeks pregnancy.... I have appointment with Dr in this Friday does I need to mention it to Dr or no need..?