A few months ago i woke up with extreme hair loss, i went to the doctor and they said everything is fine. im still losing hair, especially with water ?

More info needed: Are you pregnant? Has this happened before? Are there any other signs or symptoms? Is your hair loss is certain spots or diffusely all over? Can other people tell? I would schedule another appt with your doctor and have a list of questions for them and ask for a diagnosis or explanation rather than "everything is fine.".

Telogen effluvium: Telogen effluvium is a form of nonscarring alopecia characterized by diffuse hair shedding, often with an acute onset. A chronic form with a more insidious onset and a longer duration also exists.[1, 2] telogen effluvium is a reactive process caused by a metabolic or hormonal stress or by medications. Generally, recovery is spontaneous and occurs within 6 months. We treat with B12 shots every mon.