Okay so, I have sex on april 9th and didn't use a condom. Im not sure if he came inside me or not but I've have my period every month. Its been three months. This month my period was light and only lasted 3 days.. I've taken 2 dollar store tests that came out negative and one winndixie one that came out negative (but I took that while I was on my 'period') what's the possibility that im pregnant? I really need to know. Im super scared.