Is it possible?

It's it possible to not ovulate even if you have periods? I heard that sometimes one period you might not ovulate but not every one. My periods have been off since I've been off the pill in October and my husband and I are TTC. I've had a period November 21, January 23 and March 6 (since October). Ice tried <a href="">tracking ovulation</a> and there's no signs, all negative on ovulation tests. Sometimes cervical mucus looks like ovulating but everything is negative. Please I need help figuring this out and what to do to help ovulate and conceive! Thank you!