Possibly pregnant

So my boyfriend and I had unprotected sex on the 3 of July and I was ovulating on the 5th. the next day I took plan B I'm on birth control and I take my pills every night not at the same time but every night! I'm supposed to get my period today... I'm worried that I'm stressing out too much and I would really like some insight. My cycle is normally 6 days. and I'm worried that I could be pregnant if anyone has any information I would appreciate it!