Is it possible you arent Ovulating?

kits

I got off of birth control end of October. So since November we’ve been TTC. My question is in November i took the OPK Clear Blue & it came pack positive well it only showed my peak days. This time around I’ve taken the test 3X so far based off of the prediction as to when I’d be ovulating & it still showing low on the clear blue OPK. Is it possible that i just don’t have “high fertility days” & only have the “peak fertility” days? Has anyone else experienced this?