I have minor cramps on the lower part of my stomach occasionally and I couldn't sleep last night until 3 am (not sure if it's because of PMS or just because I'm scared). Also, there's some occasional lower back pain.  And when I woke up, there's no blood. I'm not pregnant because I never had sex. And I know it sounds stupid but even though I never had intercourse or any sexual contact whatsoever, I'm scared I'm pregnant -_- I get paranoid about these things. Help?