Help! Ovulation problems!

Okay so I need advice 😩 I was on depo for 3 years. I've been off for a little over a year but I'm worried that I'm not ovulating, I bought the test strips and I've been getting negatives everyday. Testing between 2-4 only once a day though. On top of having really weird sporadic bleeding. Like 2 weeks late, bleed for 5 days, stop for 2-3 days then again for 5 days.. then stopped for a week and a half and now slightly spotting today. I'm worried I'm not ovulating. Any advice???