So last night I had sex and he didn’t pull out. I tried my best to get everything out of me last night, however this morning when I stood up, there was a very watery red/light brown substance dripping out of me/down my leg. I went to go use the bathroom and when I wiped this is what it looked like - almost a light pink with red specks.

Is this something to do with semen/does semen change colors to brown after sitting in the vagina for 7-8 hours?? Or am I just about to start my period/spotting?

I’m 5 days late for my period, however I’m on the combination pill which usually makes my cycle late or disappear completely so I can’t really go off of what the app is telling me.