Am I pregnant or nah

Hey ladies I am new so I am looking for advice. Some of this is tmi but I need help! I had gotten off my period and has sec the next day.. this was my first period since I came off birth control. Well the day after I had sex I had a light pink blood discharge, but sex was not rough. This happened for 2 days. I have felt sick. Head ache and boobs hurting, I have taken 3 test all have been neg but it isn't time for my flow and hasn't been 3 weeks . Am I tripping ???