So confused

I had a miscarriage on October 27th. I bled for about a week & a half. I then had one day of no bleeding then I started heavy period like bleeding for a week & a half. I had tested negative on a hpt at this point. My bbt had also dropped. About 2 weeks ago by bbt went back up. The app says my period should have started yesterday but it hasn't test. I've taken a couple cheap tests but they have all been negative. What is going on with my body? I am having sore breasts, exhaustion & some nausea. I just don't know what to think. I so badly want to be pregnant. What do you ladies think is happening?