penis problem

Hi just needed some advice. for years i seem to have had an allergy to any type of soap or shower gel i use to clean around my penis resulting in a rash on my glans (glands), this used to clear up after intercourse or with creams. i went to see my gp about this last year who told me that creams like savlon, germalene and  e45 are the worse thing and could de-sensitize my penis,

over the last few months i have struggled to actually ejaculate when makeing love and more recently i am struggling to get an erection and when and if i finaly do i then struggle to keep it. could this be de-sensitization of my glans (glands) cauing this problem? i ma normally sexually active and through life i have had a probelm with ekaculating to quick and having an orgasm to quick now it seems to have turned around

any ideas

thanks

seagrave