Thanks for reaching out Donna! We can certainly help you.
Our inventory is a bit low at the moment owing to the ongoing ammo drought., but the ammo on this page will work well for self-defense with your handgun. An S&W is designed to safely fire 9mm +P (assuming it is remotely modern). Overpressure ammo like this will wear out your semi-auto's moving parts a little faster, but that's hardly of concern for self-defense.
I'm not certain exactly which handgun you have, but I'm sure we haven't got its magazine (what you call a clip) in stock. We have got several holsters that are suitable for S&W 9mm handguns. Without knowing which model you have I'm hesitant to make a definitive recommendation, but this holster by Blackhawk is great if you want to tuck a full-size S&W M&P 9mm in your waistband: luckygunner.com/holster-inside-the-pants-blackhawk-right-hand-glock-17-22-31-s-w-m-p-full-size-9mm-40-s-w