Hair Loss

I am a girl and I have long hair. i feel like I am losing more than the normal number of hair strands a day. i just use some anti hairfall shampoo and nothing really serious other than that. my mom always tell me to stop sleeping late because she thinks it also is one of the causes. i do believe her on that but I really can't help not sleeping late because it's what I have been used to... my hair still looks normal but I really am afraid of combing or brushing my hair in public because people might see how many hair stands i lose.. :(