Sex related question??

This is my first pregnancy and we are still early along about 5 to 6 weeks. We are still being intimate but I've noticed a small drop in sex drive and it feels like there's more friction. We've tried more foreplay, lube, slower motions, and honestly it's not helping. My lady feels like a cartoon billowing smoke afterwords from what feels like a slight friction burn. I feel fine after a few hours but I just wanted to know if this was normal or if anyone else was having problems and might have a helpful suggestion. And honestly I'm embarrassed to be asking so please be gentle. 😶