Ovulating or not??

I have went 3 months without getting a period back during the summer. I went to my doctor with some concerns and she prescribed me provera to induce my period. it was normal for 3 months and then my periods quit again. went in for an ultra sound and no cysts or anything. it looks good she said. I still haven’t gotten my period but took an ovulation test out of curiosity. this is equate early ovulation test I got from walmart.