What Are The Side Effects Of NICIP Tablets?

Hi, I am a 18 year old female, I am Caucasian and I am generally very healthy. I have recently recovered from Mono but I'm not sure if that has any direct relation to my problems. I have two questions. One, I used to go to tanning beds a few times a week but I have stopped now, but in the past month I tanned, I developed 2 white spots on my butt, both symmetrical on each side. They are near the top, by pressure points I think, they won't tan, is that normal? And two, I have noticed that on my bikini line and on the hood of my vagina I have developed two white spots that have lost pigmentation. What could those be?