My period is about a week to two weeks early, and its really light. It's never usually this light and I'm worried that I'm pregnant. I really can't be pregnant, but I'm scared I might be. I'm not sure what it means that my period is like this, but its usually irregular, but not usually this light. Someone please clue me in to what's going on! Im so worried!

Could be just an off period. We all get them every once in a while.

An early period usually doesn't indicate pregnancy.

Since you're already irregular, you can always take a HPT to know for sure. If its negative, wait two weeks and try again.

J9 is correct, sometimes a period is just strange... it isn't necessarily something to worry about... but your doctor could help calm your nerves.