Help scared

I am worried. I usually have brown spotting for 2 weeks leading up to the start of my period. I did not have it this month. I had light brown spotting for a day on 4/27 but then nothing since. I had unprotected sex on 4/15 which was 2 days after my period ended. my period last month was 7 days when it’s usually 4 due to the start of a new birth control pill with 7 sugar pill days instead of 4. My “predicted” ovulation day was around 4/24. He pulled out and i’m pretty sure nothing got inside me. I am due to get my period in about a week but i’m really nervous I could be pregnant. My breasts have been hurting so bad but other than that I have experienced no other side effects.