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.

There can b multiple reasons for hair loss varying from Telogen Effluvium to Female Pattern Hair loss. Only shampoos wont help control the hair loss. Finding the underlying cause of the hair loss and treating it will give u results. consult a Dermatologist for the same.