Ovulation / implantation HELP!?!?

sa

So I ovulated cd 12. Confirmed by positive opk and also cramps.

It’s now cd 19 and I have cramps again. I’ve been testing opks daily (just to make sure) and haven’t had any positives again.

What do we think??? I’m scared I’m actually ovulating again (possible!?) rather than it maybe being implantation