Think I have ed, when I masturbate theres no problem at all with erection but when I get with my partner I start to erect and quickly lose it. I?m 29 years old, 185 cm, and I weight 71 kg. I used to use nexium for about a year for gastritis, I had colonoscopy and endoscopy about two years ago. I think you should also know that I workout 3 times/week, I have been a smoker for 8 years with average of 5-8 cigarettes per day, i?m actually mentally stressed due to the fact that I been jobless for 5 months. I had encountered this problem 3 times and it seems to get worse each time! last time was yesterday and we tried for more than 30 mins but it was as if I lost all sensation down there. Finally about two months ago I was with a woman and we were flirting and kissing for a while but there was no sexual intercourse. After I left for home I had enlargement on the left testicle and the cords that go into it, it was very beautiful and it lasted for almost 2 hours. I applied warm and cold packs, I did squats and eventually after I forced myself to ejaculate the pain was relieved. I did?t think much about it, do you think this is serious? Currently I use antihistamines sometimes for sinusitis and no other meds.