Why would I have a really light, beige colored period when my period usually starts heavy?:confused:

Because mother nature is a funny woman.
There are times in your life when your menstrual cycle can change & it can be brought on by many factors (age, stress, hormones) See how it looks next month.
If it's pregnancy or infection you're concerned about, it never hurts to visit your OB/GYN.

:)