This is a new-ish thing & I'm not sure what, if anything, I should do about it. I have recently been diagnosed with Lupus & Fribo/ ME so it may be to do with those. Or not, I don't know.
For the last 3 months, I have been bleeding between periods. Twice, it has been so much that I though my period had come early but then it stopped a day or 2 later. Often, it's not that heavy but still noticeable & lasts for days.
My periods have always been highly irregular (anything from 25 - 90+ days) but no-one has ever been concerned about that. My cycle is now around 30-35 days but I am bleeding much more heavily each time than I ever have in the past & have this extra bleeding in between as well.