You'd notice a lump easily, especially when you move from your laying position to sitting. Sometimes you might feel dull pain, but it's not always present. It really depends on where hernia is located because there are so many potential places where they can occur. They can be easy to deal with or they can be life threatening sometimes (but that'd be followed w a lot of pain). Sometimes they can cause burning sensation in your chest if they are located in your stomach, or simply a discomfort. They might not always be easy to detect, especially when small so it's always good to let surgeon have a look! letalredfabfoxy
