I got a mole on my left hand in two days all of sudden? Is this normal?

I am of 22 , i frequently got 8 moles on my left hand from past 8 years.. now two days back i got 2 new mole all of sudden .. is this normal?? i am worried about it? there is no itching and burning? it look like normal.. but its sudden appearance make me worried?please reply me?

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