Welcome aboard! and ditto to the suggestions of keeping a diary and reading up on the subject, etc. In fact, if I may suggest get yourself a daily planner or calendar with enough room to write down things as they happen. You can also keep up wtih your appointments and other meetings, etc.
I found early on that if I don't write things down immediately they're lost for good...fibro fog. And I can't keep track of my appointments or avoid double-booking without a calendar. It takes a village of doctors now to treat me...one oversees my chronic fatigue and fibro, another my arthritic back, another my high blood pressure and cardiac care, another my HRT and thyroid, another my well woman check-ups, another my pain management, and finally one my psychological needs. Then there's the P.T.
I don't mean to scare you, but you may find that a "village" works best for you. The main thing is to get the best care in all areas needed and wherever possible, to get them to work together. In any case, however, you need to be your own advocate and manage your own care. When a medication is prescribed or recommended, I don't just take it anymore. First I look it up to see what the possible side effects are and any drug interactions. If it's something to do with fibro or chronic fatigue, I check on the boards to see if anyone is familiar with it. Then I make as informed a decision about taking the medication as possible.
One other thing you might find helpful is making a place for everything and putting it in the same place each time, like your keys, purse, glasses, watch, etc. Keep a pad of paper and a pen with you at all times to jot down notes so you can remember things later on, or get a recorder to carry with you. There are many little "tricks" you'll learn to adapt to the fibro fog and fatigue and pain.
The greatest gift you can give yourself right now is patience, love and understanding. It's like the first day of school all over again. You can't read or write; you don't know anyone. This is a new town even. Well, we're all kids in the same school. Some of us have been here longer than others and have moved up a grade or two. There's a lot to learn here and elsewhere. Don't be afraid to ask questions. The only dumb question is the one left unasked.