I think is in your mind, the condon take some sensation away that,s for sure, i recommend "colitus interruptum" maybe is not the right spelling, but in this practice he copulate and take out his penis often until the sensation or the desire to cum goes away also he should dry the glande or the head of the penis between insertions, and you guys are going to be ok. If you are the lady writtring washing yourself often doring encounters decrease the possibility of a baby and he should not cum inside.. You are going to be alright I am sure you can find more info about this practice I do it all the time and I am very successfull avoiding children and doing the oposite to bring them I have three now..