Ive only been playing for 20 hours and I seem to have 3 negative active effects how the hell do I remove them?, please help

You probably need a potion of cure disease, they can be bought at any alchemist.

Or use any of the shrines that you find. An early one is the shrine of Talos next to the steps leading to Dragonsreach in Whiterun.

cure disease potions or pray at any shrine you find best one or east to find is whiterun or marketh(shrine of talos)