Not sure what to think...

I was on the depo shot for 2 years then went to the nexopran (I think that's what it's called). Well I got that taken out and the next month instantly had my period and it was consistent for a few months.it started heavy and only lasted 5-6 days and this month was different. It started 2 days late and it's been a miserable one.it should have stopped by now but it seems to still be goin strong.what do I make of this?I'm probably just over thinking this.