Ovulation

Okay so I know you’re not meant to ovulate while on your period, and you ovulate on roughly day 14 of your cycle (depending on how long your cycle is etc) but my periods last 2-3 weeks (and then I have either 1-2 weeks without a period depending on if it lasted 2 weeks or 3 weeks), so my periods last past the 14th day of my cycle, and I get positive OPKs around the 14th day of my cycle while I’m still on my period. Does this mean I’m ovulating while bleeding? Is it even possible to ovulate on your period?