Kinda freaking out help

So me and my boyfriend had protected sex two a day before my period was suppose to start. Its two days late now and im getting cramps and my chest is sensitive (usually the signs of me on my period) but no period has came yet. But when i wipe light pink/ light red pee is on the toilet paper! Im scared what does this mean i dont think this has ever happened before (n im not trying to become pregnant so help)