He’s too big? I feel inadequate

I’ve been seeing this guy and we finally brung it to the bedroom after so much sexual tension but his penis is giant, it hurts me but I want to be able to have sex normally, he is so large it hurts in missionary, any position it is almost unbearable, when It hits right it’s fine but if it’s straight on it is awful. I feel so bad I want to have rough hard sex but it’s so painful, is there anything I can do?