Difficulty breathing after birth of my son.

I too, have had shortness of breath and a weird sensation when I take a deep breath in. My son is 10 months now. I had a normal vag. delivery, but when I was pushing I felt this horrible chest/sternum pain. My OB said it will pass when you push out your baby. Well it did pass, but after I gave birth and was recovering in post op, that is when the breathing issues started. I have been to numerous docs. Have had upper GI series done, Endoscopy, Chest x-rays, CT scans...nothing.  I do have heartburn. I also have anxiety. They all tell me it's anxiety. I don't believe it! I don't know where else to turn or get any more info. I am miserable. I have a hard time standing up straight, because I actually feel like there is something pulling in my sternum/chest/abdomin area.

I hope you have gotten the answers you are/were looking for.  I wonder if this will ever get any better. Is surgery an option for me? I swear it's a hiatal hernia or something of that nature. If anyone out there is reading this please help!