Can’t cum and I hate it.

Soooooo my SO and I finally decided to have sex... We were both virgins until Jan 1st (I’m 24 and he’s 21) and we had both gotten each other off before but never had vaginal sex.... anyways we’ve been going at it like rabbits since this and he can come three or four times a night but I cannot for the life of me come and he’s tried to do oral until I climax and then go in and like don’t get me wrong it all feels amazing but I’m not getting the big O and it’s so freaking annoying.