sooo am I preggo?

Erika • 👶🏽 # 1- Sept 2019 / trying for baby # 2
So since yesterday I've felt as if my period was coming on and off ?? Has anyone ever felt this... 
Every other time I have felt my period come there she was but since yesterday there is nothing?? 
Jus wondering if I'm preggo --> only had sex one time during my fertile window