Please help I’m desperate

Okay so I have been having extreme anxiety for the last month. On April 5th my boyfriend and I attempted to have intercourse and it didn’t work out. After trying for a while we both decided we can wait. He took the condom off and we continued to make out while he was on top. His penis never went in me and he never came but neither of us know if precum was a factor. My <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> told me there was a 33% chance of pregnancy and that I was ovulating. Since April 5th was A Thursday, I took plan b on Sunday around 12 before the 72 hours was up. I felt okay until about A week later and I started spotting brownish blood. My left ovary also started to hurt tremendously. The spotting lasted 10 days and on about day 6 of the spotting was the day I was supposed to get my period. I took a pregnancy test the day before I was supposed to start my period and it was negative. If it wasn’t my period during those 10 days, I am now 13 days late. Was the 10 days of bleeding my period? Could I be pregnant? Please let me know I’m freaking out