oldgoose, we all get changes in our bodies as we get older. Hormones, wear and tear, even the ability to tolerate idiots - all have their effects! I'm going to stick my head above the parapet here, and suggest that if you haven't seen a doctor for a long time, it might be worth going, just for your own peace of mind. I suffer from a long-term condition which is both painful and debilitating, and which has its effects on every area of my mind, body and emotions. However, once I had made it my business to learn how to deal with the various symptoms, and to cope with the change in my quality of life, and yes, that does involve a fair bit of medication, the alternatives having done nothing at all to help (and in some cases exacerbating the problems!), I now am able to enjoy life and squeeze every last drop of fun out of it. I promise you, that wasn't always the case when I was 'well' and working. I've been a member of the Patient Participation Group at my surgery for the last 3 years, and understand how the system works, from ALL points of view. Our receptionists are helpful and friendly - God help them if they fail on that, it's bad enough being ill, without having to deal with a sourpuss into the bargain! - but they have also recently been trained in triage, which means that they know who can best help you. If I were to go to the practice with, eg, a septic thumb, a nurse is perfectly capable of dealing with that, without my having to see a GP and take up an appointment which might be used to refer someone to a fast-track appointment with a cancer specialist. If something is personal enough, I just tell the receptionist that it is exactly that, give them a vague idea of the area affected, and say that if the information I've given isn't enough for their purposes, I'll risk the wrath of the GP myself. Can I suggest that if you have concerns, you book an appointment either at the well-woman clinic, or with a nurse practitioner, if there is one at your practice? They are generally, though not always, female, and the ones I've met have always been lovely - very approachable, sensible, and KIND! They are highly-qualified, able to prescribe in most cases, and if there is something they can't deal with, they will get you seen by a GP, often immediately if it's urgent enough. Also, if you are nervous, take a friend for moral support! It's allowed, even encouraged, so why not do it? Apart from all else, if you are liable to get flustered, they are helpful for remembering what was said afterwards! I' m so forgetful these days, I take a pen and paper, and make notes 
Sorry if I've gone on a bit, but this is something I'm rather passionate about!