Had my period but still feel pregnant

2 months ago I had lost my virginity by using withdrawal, then I got my AF it was lighter but still had a lot of blood and a few clots... 1 month ago my SO put it in me for 5 seconds then we decided to stop as it was unprotected and I was ovulating, again I got AF a couple weeks after on time and it was heavier than the last but had less cramps then usual... I finished my AF 4 days ago and now I'm going into my fertile window, I am getting pains around my lower abdomen, I also needed to put on more weight (2pounds) and my stomach looks larger I am unsure of it being just change of weight or something else... Can I be pregnant? I'm to scared to take a test.