I used to know what the little ditch under one's nose, between it and the upper lip was called. I didn't often use the term and so forgot it. The septum though, is that piece of cartilage and tissue that separates the nostrils.

Get the surgery. I had constant, painful sinus infections, polyps and a nose that slammed shut whenever I had a cold. I had a deviated septum fixed and new drainage holes put in my sinuses. I haven't had a sinus infection of polyp since and I can usual breathe during a cold. The surgery made a huge change in my life.

Cholesterol tablets, "statins" can cause leg pain. It can be serious and so you should discuss it with your doctor. I had some problems which were alleviated by taking CoQ-10 (co-enzyme Q-10, AKA "ubiquinone") and that helped in a big way, but you should talk to your doctor.