2months post op incisional hernia repair with mesh . still looks like a hernia to me why?

Could be fluid: Post-operative seromas, a collection of fluid at the site of an incision, may cause some protrusion under the skin, looking like a hernia. It is possible that there is a recurrent hernia also, the only way to know, is to have your surgeon examine you and if necessary to get additional imaging studies. Make an appointment

Depends : One possibility is that your hernia came back immediately. ( not good but rare ). More commonly there is old blood or fluid (seroma) there that feels like a hernia but will eventually be reabsorbed and go away. Your surgeon should be able to tell you. And Ultrasound or CT scan can help if unsure.