Is this normal? No, not exactly. You need to contact the office that treated you. While this isn't a significant burn, it is still a burn, and if the treating office makes your settings higher next time, it could result in really bad burns. Second, the bar marks should be closer together, overlapping, to be a full treatment. Because of the marks, and the missed areas, this isn't the greatest treatment at all. Make sure you apply cool water and hydrocortisone a few times a day to this area to help with the redness. Don't pick it!