am I pregnant or is it too soon?

Today is my 2nd day being late with my period. I took a test 6 & 5 days before my period was expected and they both came out negative. Well today me and my SO had sex and he came in me well a few hours later I went pee and there was a faint reddish tint so I thought I was starting so I put a tampon in (TMI but my vagina has been feeling tighter than normal) took it out a few hours later and there wasn't anything on it, so I put another one in just in case got home a few hours later before I took a shower I took it out and still nothing so I'm kinda like wtf? What do you think? Btw (me and my SO have sex and like everyday last month and this month so far he's  always finished in me)