Am I pregnant??

My bf and I were messing around on Sept 18 and he ejaculated near my vag some went to my underwear. I am so stressed the following days while anticipating my period that is due on Sept 25. I got delayed until 28 when I bleed, it was lighter than my usual period but I was able to fill pads and it lasted for 3 days and had light spotting on the 4th. This is my third test now and i think im seeing a 2nd line?? Or I am just paranoid?? The first(S28) I got clean negative 2nd(oct5) was negative too at first but when i look at it the on Oct 13 i was slightly seeing a gray 2nd line so took it again today and this was the result after couple of hours. Please help me.. Am I pregnant???