hello , i just had that kind of surgery too ,
surgeon told me i wasn't going to have a scar because the hernia was small and he would go threw my belly.
when i woked up i saw a 3 inches long scar bellow my belly and 5 days after my belly started popping out and like you it's bigger than before.
if it doesn't go away I'm thinking about some justice actions against that surgeon.
12 days after surgery now.