My 11yr old daughter started her period 2 weeks ago. it lasted 3 days and very light. she just started her period again today. is this normal?

Common: First cycles are often a bit odd as most young women will not ovulate ( release an egg) & form the hormone which stops the flow.Irregular timing, weeks to months between cycles is common. Light flow for several days or heavy flow could also occur. A call to your dr's office to discuss your child's situation is reasonable if you find it worrisome.