When a hematoma has inflammation, and swelling as you describe, it raises the concern that it has become infected. This needs to be examined by a physician to be determined...
Yes, it would be wise to wait for at least a month before changing it. It could disrupt the healing process and get infected. I would also recommend going to...
A Monroe piercing will swell up for about a week if it is recent. It's nothing to worry about, it's just your body trying to fight the bacteria in the...