OK I'm getting my nose pierced and my mom have keloids and I have this bump in the back of my head its not that bigg but I have my ears pierced sense age 3 months I need to know if it is likely I will get a keloid

It depends. Keloidal scars ARE hereditary, but it just means your chances of it happening are higher.

If you do start to develop a keloid, try smashing up an aspirin and rubbing on the affected area, but with any body modification- you are taking a risk.