Hello! My husband and I are trying to get pregnant and for the past couple weeks I have been sick to my stomach with bad headaches, leg cramps, back aches, and haven't had an appetite for what I love to eat! Today I got stomach cramps like when my period starts but it wasn't the same the cramps didn't last as long and weren't as bad as usual. And this is also earlier than my period is supposed to start. I have taken a negative pregnancy test but could I still be pregnant? I am a ver small person I am 5'6 and 100 pounds and I'm 23 I don't know if that helps. If anyone could help that would be GREAT!