I am 28 and i been masturbating atleast once in 2 days with my uncircumcised penis.. any risks to me?

No: This is universal among young men after puberty. Unless the man is having intercourse very frequently in a relationship, he's usually doing it about as often or more often as you. Enjoy your body, vary your technique to prepare for different possible partners, keep sex in perspective, and maybe think nice things -- the person you'll marry, rather than some internet garbage.