Recently had sex with my significant other. The first time went as usual, however, we tried to go for round 2 and i couldent hold an erection. This was about 4 hours after the first round. Ever since then i havent been turned on or able to produce a solid erection untill yesterday. Even with the one solid erection if not touched it would disappear immediately. Its been about 4 days and no dice thus far. Ive been able to masturbate, but it takes SUPER long and its usually not with a full boner. Any advice would be appreciated. Im also in my late teens, so i dont know how normal this is. I usually have some trouble keeping an erection when putting on a condom, and ive researched that thoroughly. Normally this condom collapse doesn't cause any problems woth enough foreplay, but this whole almost no erection at all is new to me.