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.

If you are going bald from center then probably it's male pattern baldness. You need to start treatment early to prevent hairloss and for hair growth.take appointment and send pictures so that proper treatment can be given for hairfall and baldness.