Weird Periods

A little backtracking, 2 months ago I was very very late, and having weird PMS symptoms and when I finally had my period it was slimy and green-ish. I assumed I had an ovarian cyst (I get those often) which is what caused all of the weirdness.

Last month my period came on time but hardly anything came out, I'd bleed enough to have it show on toilet paper but not enough to show on a pad, I genuinely wore panty liners for 3 days and then it was over

This month I had slightly more severe PMS symptoms (which isn't out of the norm) and my period is a week early. Again, barely just bleeding.

My usual period is often late/early but I bleed HEAVILY I'm talking like - needing to wear overnight pads during the day heavy. I'm not sure if this is normal and I'm just paranoid or if anything is wrong and I should see a dr