Plz comment I’m confused

What is this?? Happened once going to the bathroom. Been off the pill almost 8 months and been trying to conceive cycles being 27,61,41,43,47 and last period jan 1-5.

First pic was 8:35pm jan 15th and second pic was today jan 16 th at 7pm. Second picture I had sex at 12:11am on Jan 16th and had the cm at 7pm that day