Sex problems

TMI! Hi, so last night I was getting it on with my boy and he goes to put it in and I literally won’t not go. I was semi turned on but even when I am fully horny it still won’t go. It literally like forcing a bowling ball through a pin hole. Idk what I should do anymore. Like he fingered me and it didn’t hurt at all but then once he tried to put it in it totally wouldn’t. Does anyone have any tips? Or any secrets on how to stretch it out! I’m sorry lol this is awk but we love girls helping girls