Am I pregnant?? PLEASE HELP

I am 19 days late from my period in June. I had sex a couple days before I was expecting to get my period, but then never got it. I assumed it was because I had just graduated and was super stressed out during that time. I have had sex a couple times after both times using a condom and the pullout method. One of the times, my boyfriend pulled out and came on me and the outside of my vagina. I am now experiencing sore breasts, cramping, and white discharge that is creamy and not sticky. Does this mean I’m pregnant?? Or am I just psyching myself out