Opinions please!

My period was the eighth to 12 January the past two days I’ve had a light pink spotting just when I wipe, then this morning when I wipe I have a sticky brown discharge I am now 10 days after my period and I haven’t had sex since my last ovulation days... i’m a bit confused with some of the stuff and I read since I had my period and I haven’t had sex I don’t believe I could be pregnant but I’m a bit concerned has anybody had any experiences like this?