Please help? I can't see a doctor, and health forums aren't helping?

This is about period problems, I'm really scared.

I have implanon, and I didn't get a period for the first 6 months. After that, I started getting irregular periods. Now I have one that's been going for 10 days, is heavy, started off dark and clotted, but is now really thin, and bright red. It bleeds so quick, straight through tampons, it's like a bleeding wound.
Is this something serious? I don't have any pain or anything, just irritation around my vaginal opening from using so many tampons, and a mild allergy to pads. I've also gotten frequent unrelated infections lately (conjunctivitis, URTI, etc.)
Do I need to see a doctor? Has this happened to anyone else?
Updates
+1 y
Sorry, should have said 'Do I need to see a doctor in emergency?'
I can't see my gp for two weeks.
Please help? I can't see a doctor, and health forums aren't helping?
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