Bleeding confused.

Bianca • 27|NY|Bi|ttc💕
So I stopped taking my birth control for one week in December. I got my period 12/30 to 1/3. The last day I had unprotected sex was 12/11 (and I wasn't on birth control). Out of nowhere, today I wiped and there was some blood and I had slight cramping. The second time I wiped, there was just some spotting. Any ideas what it can be?