I wnt flaccid in the middle of having sex. how concerned should i be?

Check with your doc: Erectile function depends on many physical, emotional and lifestyle factors. Losing an erection is something that happens to almost every male at some point, but it can be a sign that you should have the health of your blood vessels checked (through checking bp, sugar, cholesterol & sometimes hormone levels). Regular exercise & avoidance of tobacco and alcohol are essential to sexual health.