Loosing hairs at a very rapid rate.

I am from Delhi but I am living in Mumbai since August 2014 and last year i.e. around May 2016 my hairs started falling rapidly. I neglected at first but it's getting uncontrolled now and even forehead is starting to show up i.e. starting to look bald. I do not see any major change in my lifestyle but still this is happening and nobody in my family has a bald head- not a hereditory problem. I have consulted two very good doctors and took their medication for 3 months each following proper time interval and sleep as they wanted me to. But the medication did not lessen the problem. I am a football player and physically quite active in day to day activities though I work in Corporate sector, still I work out heavy almost 5-6 days a week. Any suggestions please????? Will be greatly appreciated.