Back in May I had my first "sexual interaction" and have been freaking out since. Two days after I started having some serious stomach and digestive problems. For about a week I barely ate anything because I was so worried I may be pregnant. I don't keep track of my periods but I experienced very light bleeding for only 4 days 2 weeks later. I took a pregnancy test the next day that came back negative but that gave me no relief. Since then I have taken multiple pregnancy tests that have all been negative and had two very light irregular "periods". I went to the Dr. this past week and expressed my concern and had a pelvic exam. My mind is still not at ease I don't know if I am just super worried and the stress has taken it's toll on my body or if I am about 15/16 weeks pregnant. I have gained weight but I also haven't been working out as much as I had been. I think I look bigger but people have been asking me if I've lost weight and it seems like one of my boobs has gotten bigger. Any insight would be great, thanks.