Suggest Treatment For Erectile Dysfunction

sir when me attempt with my wife firstly my panies hard but when me start sex me penies suddenly down,and me cannt done sex/????? i also elergy on my tasties previos 5 years and my tasty skin spread so mch may be reason of my panies down this elergy????i have no many to pay sir thankss. ipromise me pay later plzz sir your ac num snt m