Is anyone tight down there?

I dont get it lol cause im 9 months amd me and my boyfriend have sex almost daily .. I would say like three times a week and every time im so tight down there and it hurts like a bitch ! And I get sore really easily ... And it awlays hurts like I can only do one round a day 😩😩😭 but we do 2 or sometimes if were lucky ! ... arent we supposed to start getiing dilated at 9 months??? ... Is anyone having the same problem? 😶😳