Thread: Really irregular period?

So basically, my periods been a bit weird for about 18 months or so now.
It's always been a bit irregular, sometimes coming after 3 weeks, sometimes 4 and sometimes 5, usually lasting about 5-8 days.
But I could generally anticipate when it was going to come. Then, round about new year 2009, I missed a period and thought "oh, no big deal, I'm sure there's a perfectly good reason"... then I missed another, and another..
I basically didn't have another period till the beginning of May 2009, which was unusually light and only lasted 2 days. Then about 2 weeks later I got a really heavy, awful period which lasted going on three weeks - I had really awful cramps, which I don't usually have badly, if at all. I thought it was just my body catching up, so I was ok with it. Then it went about another 3 months - no period. Then I got discharge with some blood in it - like a really, really light period, for about two weeks, then a heavier than normal, but not unbearable period for another 9 days. I missed a few more again - got my fourth period of the year around christmas time, which was normal, so I finally thought things were getting back to normal... Nope. Didn't have another period until April, which was another extremely light one - so light I couldn't wear tampons, for 2 days, then nothing till now, which was another discharge for 2 weeks then a heavy period. I'm really confused here, have I just got a really irregular pattern? Is something up?
I've heard it can be a symptom of hypothyroidism, but I was tested for that due to other symptoms.. no, I haven't got it.
By the way, I'm 16, a virgin, and I've had my period since I was 9/10, so I'm pretty sure it should have settled into a cycle by now.
Any ideas what could be causing this? I'm not stressed at all.
I really don't want to go to a doctor - they're all men, and I feel so embarrassed, especially with my mum there. lol Thank you