Firstly, it has to be ascertained that these are moles. Skin tags and flat or common warts may look like moles. These may present with itchiness and may have irregular looking borders.
Another thing is , there are the presence of risk factors which may have to be considered. One has to consider the number of moles present. Increased number of moles in the body may increase the likelihood of precancerous moles. Also, moles that are hyperpigmented that is very black may also have to be assessed. Ink blot characteristics of some moles also need to be considered.
A second opinion from another doctor may help here. This will help allay your fears regarding these moles. Just avoid scratching them or picking on them.