Pregnancy scare...

Claire
Okay so about a week ago I had unprotected sex, he pulled out but a lil while later he went back in me and I'm not sure if he had anything on him but anyway. I'm a day late on my period. I took a pregnancy test the day before my missed period and then one today which is after my missed period. Today is also marks a week that I had unprotected sex. Both tests came back negative but I'm wondering if it's still too early? Thoughts?