21dpo!!! Is this possible?!

MamaJ
I ovulated on 1/3. I had a thermal shift to confirm. I am now 21dpo, I haven't tested for pregnancy in a week. I am just curious if anyone else has had this? My bbt is still above my coverline. One little dip close to the coverline but it's been steadily rising since then. What other things besides pregnancy could make this happen?