Larger than average

This may be TMI but my fiancé has a larger than average dick and in some positions while having sex I feel like he is just pounding into my cervix and it hurts SO bad. It’s not all positions just the ones where he’s deeper inside of me... is this normal? Is there a way to stop the pain? He always makes sure I’m “warmed up” before we start. And I would really enjoy the positions if they didn’t HURT me so bad 😩 thanks in advance everyone!!

(Sorry if this is a dumb ass question I didn’t really grow up with much sex Ed and now I’m a grown woman and have no idea 😂🤦🏼‍♀️)