Hair does have a cyclical life Dazzle, it has growth stages and shedding stages, any hairdresser who has good training will be able to explain that to you, i am just coming out of a shedding stage myself, now its growing an inch or two a month... i can tell by the amount of "baby hair" i have at my hairline.
Seriously dont worry and if it makes u feel better get a skin hair and nails supplement. x