An anovulation cycle?

Hi,

I have never experienced this before, so if you could help in any way please do or if you have experience with anovulation please could you tell me more about it.

I usually have a normal once a month period - i track it online - maybe every 6 months it will come a week early and change for another 6/7 months. I have heard that is normal.

But this month it has been different. It came a week early. I usually have quite a heavy flow and some cramping and sore breasts. This month i have hardly had any of that. At first it was brown blood which did not fill a full tampon - only half filled. The past 2 days i have woken up it has been very heavy - and red 'new' blood - which seems like a normal period. Then when i take out a tampon during the day it will be again half full.

So it is ranging from being heavy and then getting light to heavy again. So far for 3 days now.

Has anyone experienced this before?

I guess there is a possibility of pregnancy but i use protection and nothing else feels 'odd' or different - just this. But maybe it could be pregnancy?

Any personal experience or advice would be great, thanks.

Please dont ask me to just go see a doctor, i want to know if it is a fairly common thing first - thanks in advance.