Hi there. Basically, I haven't had my period for a few months now and I'm starting to get concerned! I wasn't having them very regular before, maybe a little over a month each time, but then my period would sometimes skip a month, and now it's been probably about 3-4 months since I've had one at all.

I'm 17, and I started my period when I was 13. I'm still a virgin, so pregnancy wouldn't be possible.. and I haven't been on the pill or anything like that. What's wrong with me? Is it something I should be concerned about or ...??