Will the bump on my arm from dialysis go away after i stop?

Let someone see it. : Hard to say without the benefit of examining that bump. If it is related to infiltration of blood from a needle inserted into your fistula or graft, then it should resolve with time. If the bump is an access aneurysm, it may need to be managed by your vascular surgeon. Better check with your rounding nephrologist who can better evaluate the bump. Good luck.

No: The bump (aneurysm) will not go away unless it is repaired, surgically in most cases.