well… your body is trying to cope with its new interloper. A nicely and well installed chip is like someone who’s hanging out on the front porch, off to the side… annoying, but you’re perfectly happy to let them chill out while you easily go in and out and carry on your daily business… but a chip that has been installed less than perfectly can be anywhere from sleeping on the porch but right in front of the door, or laying halfway in the door so it both obstructs and causes the door to be unable to close… and you try to move the interloper but that doesn’t work… and maybe you try yelling at it… maybe kicking it… maybe you have to call the cops by sending some pain signals, but the cops can’t really do anything but sit around with lights flashing and sirens going off… so you start to consider walling off that doorway with plaster and hunks of drywall and glue, and take a chainsaw to the wall next to it so you can have a doorway again… but none of this is very fun or nice.
In short, chances are your chip is not sitting right and your body is trying to sort itself out around your chip. It may take a long time and you’re probably going to feel some strange stuff while it’s trying. You could have a professional remove it, autoclave it, and re-install it with their own tools… but it’s not 100% necessary in most cases.