Confused...?

I'm not sure of what's happening. A couple weeks ago, I took a test because I thought I was late on my period. I tested twice and both times were negative. A couple DAYS ago, I began spotting... This went on for 2 or 3 days. Usually, my period lasts 4-5 days. I'm nervous, I'm retesting today.. It's 5am, I'm still up and I'm worried... I've BEEN worried. I haven't had any symptoms of being pregnant... Except for the erflies I get when I think of he possibility of me being pregnant. I know I'm better off just waiting and taking the test later... But, dang it! I'M WORRIED. Has anyone experienced this?? What do you all think? Pregnant or Stressin'?