Don't sleep on it, and downsize to a shorter bar
I was planning on going to my piercer tomorrow, can they change it for me? I’m not at all experienced
Your piercer will be able to change it for you. When you get a piercing in most cases you will be pierced with a slightly longer than normal bar to account for swelling. After about a month you should go back and get it downsized to a normal length bar so it won’t irritate your healing piercing by being able to move around so much.
How can I minimize or get rid of the bump?
Keep cleaning it with saline twice a day, don’t touch/sleep on it, and try to keep your hair away from the piercing. Just keep it as clean as possible and don’t do anything to irritate it.