With pic!

If your period isn't regular and it would come between the 9th-14th. Last month I got my period on 7th and Idk a couple days ago I felt weird and saw a pregnancy test at the store and I just told my boyfriend to grab it. That was March 9th. I took one that day, yesterday, and today. They all came out with a fainted line. Me and my boyfriend had sex today and a then a little while later I went to the bathroom because I felt wet and got worried and I noticed blood. I've been wearing a pad just in case and when I wipe it's pink and a little red. Could you getting your period have some affect on the test? Like can it carry hCG? I've never been told these things... need to know if I'm pregnant. Going to the doctors in a couple days.