Gun shop, gun show, pawn shop, on line auctions.
No
I assume you mean Smith and Wesson. If it is a .22 caliber S&W revolver, yes.
Contact S&W.
Needs to be examined by a good gunsmith first.
Contact S&W.
Be aware! Never fire ammunition in a weapon not chambered for it! Stick to the .45 colt ammo.
9mm parabellum
No. This was made long before +P ammo was created.
You must call S&W to find out.
9mm
The current production Ladysmith (by Smith and Wesson) fires .38 Special ammo, and can use any factory .38 Special ammo. Do not confuse the current Ladysmith with a tiny .22 caliber revolver made by S&W years ago.
The .38 Super cartridge is not compatible with a .38 Smith & Wesson revolver. The .38 Super is a semi-automatic cartridge primarily designed for use in 1911-style pistols, while the .38 Smith & Wesson is a revolver cartridge that is shorter and has a different case design. Using .38 Super in a .38 Smith & Wesson firearm could lead to dangerous malfunctions or damage. Always ensure you use the correct ammunition specified by the manufacturer for your firearm.