sex is different now

My fiancé use to be able to satisfy me with just dick but now its like nothing , he can go deep as possible pounding or slow and it's almost like i feel nothing he's about 8 inches hard. So im like have i got accustomed to taking his dick? and ik theres no such thing as a vagina getting loose but sometimes i think that. I only like head or doing anal only then it becomes satisfying. Idk what the problem is