Why am I having daily headaches, fatigue, frequent infections and more?

[sickntired120]

So after being more or less shrugged off by my PCP, I'm struggling to still find answers. For about 3 years now I have been having headaches-migraines almost daily. They fluctuate from mild pressure/discomfort to full on pounding and auras week to week/day to day/ and even hour to hour. I've also had a lot of fatigue but tend to have some insomnia. Even when I'm exhausted it can take an hour or more to fall asleep. Normally I try to get between 7-9 hours of sleep but I can sleep for 3 hours or up to 11 and feel exactly the same the next day. Struggling to keep my eyes open and find energy to move.
With all this, I was diagnosed with mild carpal tunnel about a year and a half ago. I've had joint issues for years, but they are just getting worse. I've been to the point where I can't stabilize my knee enough to stand from a sitting position without assistance for about a week. I've also had my shoulder lock and have been unable to raise it more than 90 degrees. Then starting this end of May, I got a horrible cold with fever and congestion that lasted over a week. With that I ended up with a UTI and then my first yeast infection. After those I ended up with pink eye. In July I got another bad cold with fever, another yeast infection, pink eye again, more joint pain. Just now I'm on my third cold, having sweats/fevers at night. I've been sick for a week and a half. And since May I've had 5 yeast infections. I do bruise fairly easily and always have 1 or 2 bruises on me that I can't explain. My body aches all over and I'll I want to do is sleep.
With my PCP we have tested for Lyme. 3 positive bands originally and on repeat, but not enough for a diagnosis. I was anemic. She added an iron supplement and on repeat testing iron levels came up to a dangerously high point that coincided with iron poisoning. Supposed to retest in another month, but she said if my levels remain she won't take any more steps. Not the answer I was hoping for. I'm really sick of being sick, feeling achy, and feeling tired all the time. Does anyone have any thoughts. I've thought about lupus, and have a paternal grandmother with RA. My cheeks are always red but I've never had the tell tale butterfly rash.