thick gooey blood with no "forced period"?

Okay so let me explain this first---I have yet to find people who have my similar situation....but anyway, for my case of PMS-- my Gyno has me skipping the Iron pills in each pack for FOUR months in a row, then I let my body have a period, then I repeat the same routine, I go through four birth control packs continuously--then let my body have it's period...

Well, It's been two months back into the birth control packs with no "forced period"-if you will, & I haven't missed ONE pill,--- and I've been spotting/bleeding thick, gooey, blood for the past two weeks and now I'm bleeding full on?......Can SOMEONE please tell me what is going on?

I do have a boyfriend, and we have sex decently often...2 times a week or so.
Like did I have some sort of weird miscarriage? Because I know if you are pregnant, but if you just by chance had NO IDEA that you were, continuing to take your birth control pills could kill the unborn baby.......
This has lasted for a little over two weeks now.....