Hi, My Period Is Brown/red But Mostly Brown. I Had

Hi, my period is brown/red but mostly brown. I had sex the 18 of March. I used protection and checked if it ripped but it didn't and my partner pulled out before hand. When I use the bathroom I see that in the toilet that it's red blood. When I wipe it's brown and red. Last period was the first week of March to the middle of the second week of March.