Trying out new things for sexual pleasure

I have balls that go down fare and there is hair on in but my penis is still small and im 13 should i be worried and my voice hasnt changed a bit

Depends on your hymen, a thin piece of skin that in girls block the entrance to your vagina, so it may sting a little when this get broken but you may also feel nothing. Weather you decide to try a dildo or have sexual intercourse, I recommend masturbating yourself first to get nice and aroused and wet, then insert either the dildo or have your male friend insert his penis. The arousal will lubricate the vagina and make it more comfortable for penetration. Also remember to be nice and relaxed.