You need to go to your doctor and get this checked.
I HAVE NOW HAD MY PERIOD FOR THE 3RD TIME THIS MONTH. IVE BEEN GETTING IT A WEEK APART FROM EACH OTHER HELP?
You need to see your doctor. Obviously something is not right...a number of things could cause this. Call and make an appointment with your doctor so you can be properly diagnosed.
Get an anemia testing. Make sure you aren't iron or magnesium deficient.