Ive been traveling since July (it's now september almost October) and on August 24th a lost my virginity to this guy. I had had my period on august 17th so that means that was my fertility week? We used protection but then kept having sex during that whole week and didnt use protection for about 20 seconds but he says he didn't come inside of me. He even pulled out about a minute or so before coming and finished outside. I got very paranoid the next day and started to stress out about being pregnant because I had spotted a little bit. A week later, I left that place and got some kind of sistitis so I took some medicine my mom told me. Right now, I feel like I've had some pregnancy syntoms like abdominal pain but took 2 tests and they were both negative. I HAVE been going through a lot of stress and changes in my life. And I have been stressing about this way too much, so I'm a week late on my period and for some reason I feel like its never gonna come. I have history of being late and very irregular in the past but I thought that was over.. I know having him inside of me without protection was very stupid and I've been giving myself a very hard time because of that. I don't know what to do. Help?