You are suffering from hormonal changes causing Androgenetic alopecia causing hair fall. It's completely stoppable even regrowth of hair is possible with certain medications without any side effects. Treatment depends on the grade of hair loss. So, it's a must for diagnosing which grade, you are in for an effective treatment. Please  send photos of your head, by direct online consultation for accurate diagnosis and proper treatment.

Hello. Hair fall may be due to several causes like stress, vitamin deficiencies, hormonal changes ... Biotin is not only solution for this. U should consult through direct online consulation and share me all details like images of affected area, do some blood test to know the cause.