Could I be pregnant?

Okay so I feel soooo stupid about typing this because I know chances are I'm not but I need someone's advice anyway🤦🏽‍♀️ on wednesday of last week me and my boyfriend were fooling around and we both got really turned on the the point where we were going to have unprotected sex,he put it in and trusted about 5 times until I wimped out and told him to stop,he pre came afterwards but I'm still 3 days late for my period and I am extremely worried about being pregnant,any thoughts?