I had my first Yag laser treatment today 3 weeks ago, it took 4 days for the blisters to fall off, the second week the spots were very light and I thought wow! But since last week, the spots became darker and more. I went to the Skin specialist for answers and she said it's suppose to get darker and don't have to worry because it's going to get lighter now. I have a function in 2 weeks, she said it will be lighter by that time.Will the spots get lighter and how long will it take?