Muscle and joint pain... Whats wrong with me?

[throwaway982722]

Hello,
(Dog related) (Sorry in advance for the long wall of text, I'm just really worried about my health)
I'm trying to get to the bottom of the fatigue and pains I have been dealing with for the last 4 weeks, and I'm going through any past experience/encounter I can think of.

These are the symptoms im currently dealing with: About 3 weeks ago I started getting bone/muscle aches. These were random pains all over my body. They're not severe, but bring me discomfort. I get them in my thigh, calves ,above the wrists, jaw, head, hips (basically all over the body) They last for a few seconds and then go away. I also have muscle spasms that dont happen as often as the pains but i get them too(daily). They're random. While I have those pains I have also noticed my concentration isnt as good as it normally would be. The best way I can describe it as I am almost oblivious to my surroundings? Like I am not having memory issues, but I feel sluggish. For example I will read a sentence and interpret food as good. Or I noticed I will read a sentence or quote and it will take me longer to analyze what I read and what the meaning of that is. I used to be aware of the time and my surroundings. Now I feel like i keep zoning out. Everything seems like a blur. I feel like im more easily distracted. Ill find myself scrolling through news articles, but not reading the text. Yesterday feels like it happened a week ago. I can remember what i did, ate etc yesterday, but its just a blur.
I am also having strange dreams every night. I also wake up early in the morning every day (4-5am) and i have trouble falling back asleep. Ill fall back asleep for 10 mins and then wake up, or fall asleep for 30 min and wake up or fall asleep and wake up 5 times within an hour. Its random

I went to the hospital/doctor a few times and as a precaution my doctor put me on doxycycline 100mg for one month just in case this is lymes disease. The results from lymes disease came back negative, but once again this was for precautionary measures. I'm two weeks in on antibiotics and i feel better mentally, but the physical pains are still there.

One that sticks with me is my parents mixed yorkie bit(grazed) me about 5 weeks ago. This is nothing new. We've had her since she was a baby and shes always been snappy/moody. This behavior is nothing new to me. She grazed me bc when she was laying on the couch I moved her and she cut me with her teeth(bite). I had a little bit of blood and I didnt think much of it. Shes mainly in the house, but every now and then shell slip out into the front yard for a few front mins.

The thing that worries me is she hasn't been to the veterinarian in quite some time. The last time was maybe 7-8 years ago. So since that time she hasnt had any shots. I know rabies is a LONG shot, but i hear you can get other diseases/viruses from dogs. She is old and one of her teeth fell out. She doesnt act like shed have rabies, but im trying to figure out if she could have anything else? She acts normally and doesnt display any abnormal symptoms(that I know of) Her teeth arent very clean and she has jaw chatter. I would greatly appreciate any insight at this time. I guess I am looking at worse case scenarios.