Physical Ailments

Next week I am turning 65 and my body and metabolism have changed a lot in the last 5 years. I am exercising just as often as before and eating the same healthy diet, but gain weight consistently. I have gained 10lbs over the last year! I go on long walks 3x a week and eat a fairly healthy diet, no fast food or anything. My daughter suggested tracking my diet in one of those cell phone applications but that seems like a ton of work! Is this the solution? What would you do?

Ever since I was little I have absolutely hated the way my nose looks. It's way too big for my face and there's a huge bump when you look at my profile. I'm really insecure about it and have always thought about getting a nose job. The only problem is that they are really expensive and I'm scared that people will judge me. Should I do it anyways? Are there any other ways to get over this insecurity?

A couple nights ago during a hockey game, I was bodychecked into the boards and my head hit the boards really hard. I was still standing but I got really dizzy and kind of nauseous. Now I just feel a really tired and kind of nauseous as well. Could I have a concussion, and how do I treat it?