Impatient..

So my boyfriend and I both agreed on having a baby together, so the first day I was firtile we had sex, and a few weeks later I started to have sore breast but went away and I get cramps here and there. and still have them but when my period is about to start both those symptoms happene before. And today I'm suppose to start my period but nothing yet, and im so anxious to take a test to see if I am pregnant but I feel as if its to soon, what do ya'll think?