AF has worn out her welcome!!!

So I'm on CD7 and there's no sign AF is leaving anytime soon. My flow is still pretty steady. This isn't unusual for me considering most cycles AF lasts anywhere from 6-9 days. What I am wondering about though is if I'm ovulating at the end of my period???? I know it's possible and the last few months I haven't caught ovulation (or I didn't ovulate at all). I've had a few cycles that were only 22-24 days so I guess it wouldn't be unreasonable to think I'm ovulating early. Any thoughts? I use OPK's and I think I'm going to start testing a little earlier this month and see what happens.