I have had a spangalion hernia that was repaired. I also have hiatial hernia now Never calls me shortness of breath what caused me. Shortness of breath which I just discovered was to give an echo cardiogram done. I just discovered I have left vetrical bundle Branch block. Lvbbb. Which has to do with the electrical system in the heart. I suggest you getting an echocardiogram and see if your breathing issues could relate to something like this