i am 53 with diabetes 2 which is way under control, have been using the blue pills for the last 5 years with great results and had erections that were harder and lasted long in bed, 1 month ago it stopped, now i cant even get half an erection with the pills i used, and even if i do get an erection it wont hold, am very worried, have i overused my self or do i need the real medicin as cialis or viagra, am happily married but that wont last if my problem persists pls help