Will nail fungus be all over my bed sheets, etc My ob doc say I have nail fungus But the ER doc. Says it might not be because I slammed finger w/ door

Both could be right. Trauma to the nail root can either temporarily or permanently cause a distortion of the nail plate. This distortion can often mimic a fungal nail infection. Having a fingernail that has a fungal infection is not as common as a toenail, especially on a 23 year old. You can settle the dilemma by having the nail tested for fungal spores.