soft erection

hey everyone im 32 years old. Great physical shape.Recently went to dr cause havin prob maintaing erection.He gave me full exam took blood everything came back good. He said he could prescribe me stuff(via etc) but it is costly. Since then i have taken enzyte.While there is no truth to the size which i could care less about it worked as far as the flow.However last night different story while startin off w/erection it became coft after couple minutes.I have been takin enzyte for a couple of weeks.I do not drink or smoke or take anything that would interfere with gettin an erection. This problem is new and came out of nowhere.I am not stressed or nervous like i have read up on which could be symptoms.Please any help or suggestions on what i shoild do would be greatly appreciated.

[SwitchOn990]

How often do you masturbate? Excessive ejaculations will cause this.

[bobbys745]

not even once a day.With my girlfriend and i schedule.We have sex maybe once a day or every other day.