R.M.
Blackheads have to be removed. They won't go away by themselves. If you are not good at removing them yourself (usually by opening your pores through cleansing thoroughly, steaming your face, and then squeezing gently; and/or using an extracting tool), then I suggest you see a facialist, and have it professionally done.
No, it's probably not from your children. You just have oily skin.