I have a flight coming up soon. I just had major shoulder surgery and my arm is in a sling. Am I going to have a problem getting threw security?

You're absolutely allowed through security, but you will go through additional screening. You cannot be forced to remove any medical apparatus but there is less screening if you do. Try to wear easy to remove outer garment jackets to remove and no heavy metallic objects. Declare if you have a hip, knee or any other replacement that contains metal. Please remove your cel phone!

No you should have no problem.

Should not be a problem getting through TSA screening post surgery.

No problem. Worst case is they'll "wand" you if the sling triggers the scanner