K... Here's the deal. My boyfriend and I had sex one time, and that was when both of us lost our virginity. We used the withdrawal method and I know for a fact he pulled out in time because I saw him jerk off to finish. But then I was so scared I spent the entire next day on research and I discovered pre-ejaculation and I about peed my pants. This is the only thing I am worried about. So I waited to get my period and I got it. However, it usually lasts for at least 5-6 days, and this one only lasted 2 days. I got scared and took 2 home pregnancy tests the next day, and they were both negative. But that wasn't enough for me. I continued to do research and found out a bunch of early pregnancy symptoms and saw that at one point or another since having sex I have experienced almost all of them. I am so confused and don't know whether to believe the tests or my body. Please help me.