Benign or Malignant Moles? What are my Chances here?

I tan somewhat frequently in high-pressure (or high powered) tanning beds - anywhere from 1-3x a week. A little less than a week ago, I noticed that a mole on my thigh had grown a little and now has some jagged edges - it almost looks like a jagged flower. Two more I have found to have white patches in them, with one of those two have a hint of pinkish-red to it. Plus I am developing two tiny freckle-type moles that have suddenly appeared over the past two weeks. My dermatologist appointment is Monday to have them looked at. Does this sound like melanoma at all? I'm pretty nervous. Also, what is the typical treatment for abnormal moles? I only started tanning over the past year or so. I started out tanning April-October, but this year I've started in February and have been using the most powerful tanning beds (think Tan Co.'s "level 5" beds) at least once every two weeks.