Lack of period symptoms ?!

Usually when I'm close to having my period I will get nipple soreness and some bloody discharge. Last cycle I had nipple soreness on day 19 but on this cycle I don't have any and it's cycle day 19. I had unprotected sex on cycle day 14 but my SO says he didn't ejaculate in me. I have a 28 day cycle, my period should start June 23rd. Could I be pregnant ?! Please respond I'm freaking out.