Possibly pregnant?

Alisha
My last period was June 11-17th 
I had unprotected sex the day after my period ended and my bf came inside me because we're trying to get pregnant. I am irregular and had quit birth control before my period had started. My next period is suppose to be July 16-22nd. When's the best time to take a pregnancy test? I kind of want to wait to see if I get my period but I'm not forsure when it'll be since I'm irregular.