Pregnancy Scare 😭

My last cycle was Feb 16, and I had sex on March 2. Unfortunately the condom broke. He was pulling out as he was finishing but didn’t notice it broke until he looked down. I’m nervous because I don’t know when I ovulated. My cycles are usually 27 days and it seems like I’m always ovulating on the 13th/14th. The incident happened on the 15th at night. I don’t know if I would still be fertile the day after ovulation. We rushed to buy Plan B and took it within an hour. Aunt Flo is supposed to show up today, nothing yet. I had one test left and decided to take it. It came out negative (I’ll post a picture so I can have another set of eyes) Should I trust it and wait for my period to show up?