Guys, thanks a lot for all of your help and please keep it coming - I am very grateful for it and am amazed that no one has started abusing me yet for being an insensitive male chauvanist. It's great having a forum like this as it is a problem that I am unwilling to talk to my friends about and it's been welling inside me for over two years now. Thank you all so much.
PS In response to someone's question about age, my g-f is 21. She does have Asian blood in her so it might be the root cause but I will have to also find out about the damaging effects of the pill - sounds nasty.