Erractic

During sex I used to be able to go for at least 10 minutes with or without a condom. But lately, specifically in the past 3 weeks, I have seen a significant drop in my time and in strength of my erection. What could be causing this? I have no health issues- physical or psychological.

[metropolis]

ED is a multifactorial condition. There are many factors that could cause ED (e.g. cardiovascular disease, diabetes, smoking, relationship problems, anxiety, depression) and only a doctor can determine the exact cause of your problem and prescribe the right treatment. Go see a doctor (urologist): ED is a common health problem and it's no shame to seek professional help.