
Hernias
do not 'fix themselves'. Sometimes, if they're
very small and you're lucky, you can push them back and the muscles will close with a 'pop' and stay shut. Otherwise what you see is what you get. Small ones, which are just a little piece of abdominal fat poking through the unsealed abdominal wall, will stay as they are and do no harm. Larger ones - due to the hole in the abdominal muscles being larger - might also have a loop of bowel trapped, which is a serious health risk and will certainly need surgical intervention.
But none will heal all by themselves.