Beautiful ladies I need help!

Lovely

So last month I had a miscarriage and I got my period on Dec.9th 4 weeks from the miscarriage and today I took an ovulation for the first time and it was very negative you can’t barely see a line but my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says ovulation tomorrow. I’m not sure if I already ovulate or not my period is regular 28 days and I’m expected my period to come on January first week