In the doggy position, have any girls been able to overcome pain from having sex behind? Vaginal to clarify. While I might have a slightly above average penis, it's not super long or girthy. I point slightly up if anything, not down for the angled approach..
Unfortunately for my darling wife, she seems to have sharper pains when I am behind her and in deeper and I don't know if it's because she needs to do pelvic floor exercises, or if her being blocked up much of the time contributes to this.
Just anatomy?
Masturbation frequency 
Have you ever talked about masturbation or jerking off with a family member? 
Contraception
Does excessive masterbation cause sexual anhedonia? And how to cure it?
Dry, leathery glans penis when erect