I need some advice please

Gabrielle
Okay, so my cycle should have began April 3rd, and it just began yet. On April 3 until April 9th (when I was supposed to be on my cycle) I experienced light cramping but no blood. I actually had sex three days in a row, march 5, march 6(3% chance), march 7(3% chance) and also march 22nd (11% chance). I haven't had any symptoms besides my breast feeling heavy and I can see the veins in them a little clearer. I haven't taken a test, just kind of nervous. Could I be pregnant or could this be stress related due to my hectic life. All those times of intercourse were low percentages of ovulation. Please help.