Hi ladies!

So I had sex with my husband, and when I saw my underwear on the floor (to pick them up), I saw that I had a dark brown stain. I thought it was weird because I knew I hadn't pooped myself for sure! So when I look closer, it's actually blood! It's very dark brown but I can see red in it. And I thought it was so weird. So when I went to go pee, I wiped myself and saw that it definitely was blood, but very brown blood. Now keep in mind that I just had sex, so when I wiped there was mucus. But, I'm not sure it it was my mucus mixed with the brown blood or the mucus was blood. But what does that mean? I am ovulating (so says my app). Can anyone help me find out what that means pls?