Previous I was having a long hair but there was no hair fall but after I cut my hair I am witnessing hair fall alot .my hair is smooth I don't even comb it with hair comb I just comb it with hands. And I am using head and shoulder shampoo and also apply coconut oil 3-4 times in a week .what may be the reason do I need to changeshampoo? Or do I need to consult any doctor .my age is just 23.