Brain fog, fatigued, reading poorly, etc.

Hello everyone. I have just joined the forum to see if anyone else has experienced what i am experiencing and what they have done to cure it. On December 8th, i took antibiotics (zithromax) in liquid form, a one-time drink dose. Two days later, i began experiencing a brain fog, and it grew over the course of about a week into pretty severe fatigue, and i always have a foggy brain. Sometimes its worse than others, but its always there. Mixing up words in sentences when i read, a subtle headache, rubbing my temples, sore neck and shoulders, sensitivity to light, difficulty remembering what words i am trying to use, feeling like im dreaming, and just overall not feeling like myself. things i will disclose: I got out of prison about 9 months ago (marijuana charge), i have a very stressful full time job, i go to school part time, I lift weights and workout in a very intense manner, and i am always “on the go”. rarely have a time when i am not reading a book or thinking of ideas to further my future. I am wondering if this brain fog problem i have is from taking the antibiotics, and the antibiotics gave me Candida (yeast overgrowth), or if i am just completely burnt out in the adrenal glands from my stressful go-go lifestyle. It seems too much of a coincidence that i took antibiotics two days before i started experiencing this, and if you do a little research you will find that candida (yeast overgrowth) can happen after taking antibiotics, has these exact symptoms of brain fog and everything else ive described. This is a horrible way to live life and i appreciate any insights that anybody has to offer.

by the way, My diet and lifestyle (besides my stressful job) are very healthy. I eat leafy greens, broccoli, chicken, beef, eggs, coconut oil, peanut butter, almonds, and everything is organic. zero refined sugar and almost no fruit ever.