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 so many good shampoo, it depends on scalp condition and needs. In general you may use anaohase shamooo, it works well all the time. Don't use too much oil, it doesn't help. Coconut oil is good for dryness of scalp but ocassionally