Hey, relax a little! You're putting WAY too much pressure on yourself to 'perform' up to some arbitrary standard. Most guys would love to be able to do repeat & even 3rd, 4th or 5th times. You mentioned financial troubles - that is definitely a big stressor & stress is a big-time enemy of male sexual performancev& this extra stress definitely could be slowing you down just a bit. I definitely do NOT think this is ED - ED is usually defined as not being able to achieve an erection suitable for intercourse even ONE time, not a case of getting it up once or twice, then running out of steam! Every guy's 'performance' (not a good word for this in my opinion) will be somewhat less over time, but it's way too early to be thinking this is your problem. And putting even more (totally unnecessary) pressure on yourself to 'perform' (UGHH - that word again !!) just makes the situation worse. If your GF is putting pressure on you to 'perform' multiple times, and doesn't understand that even the best of us have limits, then maybe it's time to find someone who's a little more understanding. Most women would be VERY impressed at what you've been able to do to this point. Also, keep in mind that there are many other ways to please her besides intercourse. You do NOT have ED - if anything, you're performing well above the norm...