Im 19 years old and have been with my girlfriend four 5 years, we have had intercourse regularly throughout our relationship and i have never had a problem, but lately i lose my erection during sex. I can get hard while pleasing her, but it doesnt last unless i give it constant attention. I have had bronchitis for the past 2 weeks and im wondering if this could the cause. Has anyone else expeirienced this with this illness? or could it be something else? My problem seems similiar to those below, but an illness was not mentioned. I am becoming very self concious about this problem and fear it could hurt our relationship. Any advice would be greatly appreciated.