The vision often will change as a person continues to heal from LASIK. If the near vision is mainly what is giving you issues, you could consider an over-the-counter pair of glasses, unless you have residual astigmatism as the main issue. You could also request a prescription again...
Many people with darker pigmentation in their skin or eyes can have these types of spots and they are totally normal. However, you should see an eye care professional to be sure that this spot that seems to be growing is not something more serious like melanoma.