Messed up period

There has been months where I skipped my period, but then there’s ones, like right now, where I got my period twice. My last period was 2 weeks ago, and now I have it again.

I’ve been skipping a month at most, but it’s rare. But then I started taking pills for my acne (About 6 months ago), and my period went from a week to 3 days, although I get spotting like everyday.

Until recently, I’m getting my period twice a month, but I don’t get spotting anymore.

I was told by my dermatologist that the pills will slow down my period in the beginning, until my body gets used to it. But it’s been 6 months, and now I don’t even know when I’ll have my period anymore.

Anyone knows what’s happening?