Is it aids related dementia? I do now?

I had an hiv exposure 9 years ago . i tested negative on western blot 1 and 2 , tridot 1 and 2 and pcr for hiv 1. All three tests were negative last year after that i had no exposure  but im had weight loss muscle loss and plenty of symptoms. Now im having sleep apnea i cant breath when i fall asleep i wake up. I also get the urge to urinate when i fall asleep and i wake up and have dreams about urinating and motion frequently and wake up. My cognition is declining and im finding it hard to understand simple sentences these days when reading or communicating. im really worried if i may still have hiv and if im developing aids related dementia. Doctors tablets arent working for the sleeping problem. Im not able to sleep more than 5 hours together. What should i do now?