Receding hair line. What should i do?

Hi,doctor... Since last 1-2 years I m experiencing issue of receding hair line ..although I don't have dandruff problem and I regularly oil my hair...my mother at the age of 50 has long,thick hair ..however my father doest not have hair...my brother too is suffering male pattern baldness... In my entire family background... Paternal side...every male suffer male pattern baldness... However no female has any kind of receding hair line or hair loss etc...I don't find much hair fall...cause seeing my family history I take the best care of my hair...but still without any alarming hair fall rate...I don't know how I'm experiencing receding hairline issue... My hair line is so receded that now when I make a pony of it .it gives a frontal bald look...this problem started only since last 1-2 Years...plz suggest me what is the reason and what should I do ??