Hey, sweetheart.
I am very sorry for your current ordeal. People do not understand the full extent of just how painful illnesses like Fibromyalgia can be.. I can identify with your problems, as since the age of 13 I have suffered with Chronic Fatigue Syndrome / M.E. (I am now 19).
The positive words I can give you are to think to yourself "This may be the renowned 'prime' time of my life, but I do not have to see stages of my life in this narrow way. The prime of my life could be when I hit my 30's - Which is still very young and I have settled down with the man of my dreams and family." [if you have this yet to come].
This may be desultory, but you may see an example of what I am trying to say.. It really peeves me off when people are so selfish and are like "I wish I'd have had kids later" or "I want to LIVE before I have kids" etc. Because, for the sake of what??! Getting p*ssed out of your skull on a weekend-ly basis!!? Kids are the BIGGEST GIFT one could ever wish for in life!!! ... The situation with me is that I am 19 and there is an age difference between my boyfriend and I - We are hoping to settle down very soon in terms of creating a family.. I may end up being a young mum, but I could not care less!!! This "prime" time of my life doesn't have to be conventionally adhered to in terms of having no ties, but for having the greater good bestowed upon me at such a young age - that is kids, marriage, family stability. Do you see my point?
You have all the time in the world and all the rest of your years to make up for lost time..
You may be ill now, but you may have greatly improved in a year or two.. Keep your head up as much as you possibly can and always think to yourself that there will be a cure one day.. You could do something proactive about your illness - research medicine, try different foods / holistics / exercises, keep a food / activity diary to determine triggers of symptoms.
In the mean time, please do get all the necessary help you can get. Utilise your resources as much as possible. Claim whatever disability income you are entitled to - at least then you could by comfort things and luxuries to pick your mood up
Get plenty of sleep and bed-rest. Lie in a dark room when you feel off it. Take naps. Meditate.
Note: I got told that someone had M.E / CFS and they had thyroid tests, albeit they came back clear. They went to a specialist and got put of thyroxine - MAGIC!!! This person suddenly felt better and had loads of energy.. So a thyroid issue could be looked into.
Take care and God bless. I hope you feel better as soon as possible. x