Is Stomach Pain And Fatigue Signs Of Pregnancy?

My boyfriend and I had sex about 2 weeks ago, it was normal sex for us and nothing different, but when we were done we both noticed a white glob of something on both of us. We never really thought anything of it, and we continue to have sex regularly just like normal. About a week after having that sex, i got what i thought was my period but it only lasted for about a day and it was very light, this is not normal for me usually my periods are 5-6 days long and heavy. It's been about a week since then and my boyfriend thinks i am pregnant. My other symptoms include: fatigue way more than normal, stomach pain, a few headaches, frequent peeing, large apetite, and a large clear glob disharge very often during the day. I have taken 2 home pregnancy tests and they both came back negative but I am still worried the tests may be wrong, especially after researching symptoms of pregnancy. Is it possible that I may be pregnant?