Condom broke

Hey ladies, so last Sunday my guy and I were having sex, (I am not on any form of birth control) but we use condoms. Anyway the condom broke. He said he didn't cum inside me, but I am worried about the pre cum. So I took a plan b pill within 3 hours hoping it works. Then I noticed that I was on day 2 of my fertile window and that made me freak out even more. My SO told me to keep calm and that everything will be okay, and as much as I want to remain calm I can't.  I still have to wait another three days til I take a pregnancy test. Has anyone been in this type of scare? If so, how did you keep yourself calm?