Suggest Remedy For Difficulty In Erection

hi i am a gymmer.due to unawareness,without support for penis i did heavy excersises..my seeds(balls near penis) is hanging...my penis is not erecting to good extent..i consulted a doctor and results shows that,blood floe to\wrds my penis is low..he prescribed T proxym 300 and some medicines..my seed problem has been rectified..but not my erection problem..how it can be rectified please help me..may i go to gym after some rest?