Am I pregnant?????

Patient: My boyfriend and I, both 16 had sex 4 days ago with a condom being the only form of protection, it was a few weeks past it’s expiry date but didn’t break, he also made unprotected contact with my vagina not inside but on the outside for about 5 seconds. My period was expected in the past few days or hopefully in the next few. Do you think I need to take plan B? Could I be pregnant? I’m stressing out!!

Symptoms: Sore boobs, low sitting cervix