My bladder cock blocks me

So this might be weird to some of you but I just need to know if I'm alone in this! I LOVE when my bf and I have sex in doggy style or when he's spooning me and taking it from behind but sometimes those positions are really uncomfortable because I just feel like I have to pee! And not in a good "I'm really turned on" way but it feels like he's pushing into my bladder and I have to make him stop because it's all I can think about. I always empty my bladder before sex and it's not every time but I just want it to NEVER happen again. Any tips?!