Physically and Mentally Ill: Will this pain ever end?

I am not doing well at all, both mentally and physically. I feel so exhausted and fatigued that I feel sick. The pain in my hands and arms is getting worse too. On top of that my whole body aches in almost a flu-like way. I have no fever, and no other flu symptoms, but you know how your bones ache when you have the flu, I have a milder, albeit still achy, throbby painful version of the flu-ache.

Despite being so exhausted I cannot sleep, which makes me even more exhausted. I am also getting more and more concerned about my physical symptoms, because they seem to be getting much worse and I seem to be getting more symptoms. Last night as I tried to get to sleep I remembered that around the time my hands started to hurt/lose mobility I had used an powerful insecticide throughout my house, because a friend of mine had discovered an infestation of bedbugs at their house.

Although I never saw, and have never seen (thank god), any bedbugs at my place I was concerned some may have been introduced into my home on the clothes/shoes of my friend, so as a precaution I sprayed my place... (a lot...I was freaking out as I have a phobia of bedbugs and lice). I opened all my windows and door while spraying, but numerous times while spraying I was overcome by the fumes. Last night I started worrying that I have poisoned myself with the insecticide, and that is the cause of my symptoms.

On some level I know I should not try diagnosing myself, and should wait patiently to see the rheumatologist in mid-December...but I can't stop worrying about what is happening to my body. I just can't manage being physically and mentally ill.

My mood is also extremely low right now. Despite trying to push myself to do things I have cancelled my choir, and my singing lessons this week, because I feel so depressed and physically ill. I am so tired of trying to get better and failing so miserably. I'm not sure I can manage this much longer.