i went to the clinic, just a tad bit embarrasing talking to the female doc about it lol, but yeah she told me to put moisturiser on it and rub it in good so it absorbs (my mind was in the gutter at that point lol) other then that she said have sex with a condom more freqently and when its sore, no anal exept with a TON of lube (which i do anyways)
EDIT: "(and remember if her libido drops a lot it's because of the birth control!)" guess im lucky it has had the exact opposit effect on her