I really couldnt get an answer the first time i posted this.Lately I have been slightly concerned with not being able to get a full erection or even hold an erection for very long.Im an 18 year old male whose in shape.I use to masterbate for long hours,not rough or anything just for a long time.I couldn't ever figure out why I never got any erections during the day or throughout any other day.Now the only way I can even get the slightest erection is when I'm turned on ,even then it's not fully erect. My main concern though is that there are two lumps on opposite sides of my penis which are the same color as my skin,there not big and have stayed the same size,but I have also notice that sometimes there may be pain on the left side of my penis,and rarely on my right and it feels as if my penis feels numb after the lower bottom half of it.I haven't masterbated in a week,been in the mood,but it seems no better really.Should I be concerned with these lumps on each side,and what could these lumps possibly be?