My boyfriends penis is too big?

Lissette
I just started dating a new guy. But every time we have sex it's really uncomfortable for me. He isn't circumcised so I'm sure that's why. His penis has a large girth to it and it's really uncomfortable with certain positions. I try to "ride it out" lol no pun intended but it gets to a point everytime where I have to stop all together. I've tried longer foreplay and speaking to him about it but I don't wanna have to have him hurt me everytime. Will I get used to it? Any tips or ideas??