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.

I would suggest you visit a dermatologist near by, give a detailed history, get your scalp examined and start the treatment asap. Dont wait as the morw yoy wait the more hair thinning you will face. You can start with mesotherapy and prp treatments along with some supplements