I'm a little worried that I might be pregnant because I feel so strange. I have mood swings, I'm always hungry, and I am so tired all the time. This is very unusual for me. I'm not under any more stress than normal and work has been the same, if not, less stressful. My boyfriend and I are sexually active sometimes with condoms, sometimes with out. I'm not on birth control. I'm thinking it may just be pms and my body is reacting differently, but I'm not positive. What do you think?