How do I even know if I’ve ovulated at this point?

Back story: I’m nursing my almost 15 month old. Had one period in January (13th). Been trying since December. My period hasn’t returned, all the tests are negative. And I keep feeling like I’m PMs-ing. The only sign that I’ve had about my period coming since right before my last one in January, is my nipples feeling like a thousand razors are cutting them when I nurse. I’m assuming with this same symptom, I’ll be getting my period within the week. Someone, give me some Hope please? My little is hardly nursing anymore.

Here are my stupid charts: