DD11 got her first period in August then had her next one after 28 days in September. She's had nothing since and it's been 11 weeks. Is this normal? I'm a little concerned as I know girls can be irregular at first but 11 weeks is a very long time not to bleed once you start menstruating isn't it? I'd like to know if anyone has had similar experiences with their daughters. She doesn't like to talk about it even to me so she'd hate to see a doctor.