PLEASE HELP NO IDEA WHAT TO DO EMERGENCY

Please read I’m 18 I don’t wanna get pregnant!! Basically I’m on bc I went to see my bf for a week(we are long distance) I missed 2 pills then took one to try and just continue the pack then I got my period(I was on the middle of the 3rd week) so I stopped the pills and had my period for the next 5 days. I was sexually active the whole time. My bc makes me sick and I don’t want to start another pack but I will if there’s a chance I could get pregnant without. What do I do? Should I take plan b? Should I start a new pack? Thanks in advance!