Recently I Have Been Sexual Active And Its Been Fourteen

Recently I have been sexual active and its been fourteen days since we did it first. we used protection , but his condom slipped off and was inside me. so we took precaution and took a plan B. now this morning I wake up and find brown discharge as I finished using the restroom. Ive never had my period because I have high level of Testosterone and overweight so i havent been able to get it. Ive been working out and taking some pills to help weight loss and get my period. I took a pregnancy test today, came negative, but not sure if am in the clear. Hope this helps/