There is no way to tell from the picture you took. Wet your hair and comb it back; then we might be able to give you a more accurate opinion. Regarding male pattern baldness and hairloss in the shower, an informal rule among dermatologists is that you shouldn't start to worry unless you're seeing greater than 50 hairs on the shower floor after a shower. Even then, there is a period betwen the ages of 18-early 20s where a man's hairline normally recedes at the temples, and you lose the staight hairline that you had as a kid. Could just be this depending on your age.