You're Catching Up Over Coffee with Your Good Friend, Linda

You're catching up over coffee with your good friend, Linda, who confesses in a whisper that she's been recently feeling pain during intercourse with her long-time boyfriend, Juan. She hasn't told anyone yet. She's hasn't noticed bleeding or anything out of the ordinary, and it doesn't hurt at other times, only when she has sex. Juan likes to thrust quite hard, and she's not always into it. What would you advise her?

A) Try to find a good doctor who will listen to you and take time to reproduce the pain during examination. It can be anything from an infection to not being aroused.
B) Try lube. It looks like a typical case of too much friction. It'll feel really good when you get the right lubrication.
C) Go to a drugstore and get an over-the-counter vaginal cream. It's a yeast infection. A week of treatment and you'll be back to normal.
D) None of the above