HiCassie, and welcome to BB.

The pill that you were taking for acne is still a contraceptive pill, even if it was prescribed for a different purpose and would have been acting as a form of birth control (if you we're taking it all the time)

What you are describing sounds exactly what would happen if you stop taking the pill hall way through a cycle, it is called a withdrawal bleed, because it happens when hormones are withdrawn.

I get that you want to be pregnant but I'm almost positive that you aren't. This could just be the way your body is responding to try and get its own natural cycle back after taking the pill.

Also, I think that you probably need to have a more in depth chat with your partner about the realities of trying for a baby, it isn't the sort of decision that should be taken lightly.

Good luck.