Possibly pregnant .... Again !!!!😩

Hey ladies ! I’m either paranoid or pregnant 🤣 I had my second son on my 20th birthday , so June 2nd 2018 . He will be 6 months old dec 2nd , I had unprotected sex about 2 and a half weeks ago and my bf had cummed inside me ... without my knowledge ... I know I’m fertile as hell but I had just gotten off my period and according to my tracker , I wasn’t ovulating . Could I get pregnant from this ? I will obviously end up testing and I know none of y’all are drs but I just want to hear some stories of the similar situation ..