2 days "late"

Karissa

So after 5 years, I got my mirena removed on 12/24. My doctor said that I'd spot for a few days, which I did, but then on the 27th I started bleeding more heavily. So I thought I was getting an actual period. That lasted 5 days, everything was good. Had the normal cramping when I was supposedly ovulating according to my calendar, but now I'm two days late according to that same calendar and still getting negatives. Could it be possible that I didn't have an actual period and my body is still adjusting or what?