What is this !? Tmi

I'm late for my period and for the past 2 days I have been experiencing light pink discharge and dark brown. Not even enough for my pantie liner..when I had sex earlier today I noticed. It more on him.(his dick) it was milky pink. He called it strawberry shake. I think I'm pregnant but I'm not sure. So can someone please tell me if this is the kind of spotting you would get If your pregnant ?

P.s in the picture it looks red but it isn't it's pink and it's thick . Kinda like white discharge mixed with pink