Ugh no af but NO +

Alyssa • Newlywed that`s freshly prego again after a MC this September. Wish us luck on a successful pregnancy!
AF was due 4 ago. No sign of it. Took two tests (second one was taken yesterday) and both neg of course. bbt has been 98, 97.8, 98.0, 98.2 the last 4 days. I have been nauseas but I swear that's just because I want to be prego. I hate this. I also have been extremely stressed this month so that's probably why my period isn't here.