It sounds that you have had symptoms of an episode of sleep paralysis ...
See reference >>
It was just brief transient and harmless
As to your concern of feeling tired over the past 3 months there are many possible explanations for that ( it most likely is NOT leukemia )
It is good reson to see your doctor and have this checked into further
There are several qualities of feeling tired ( sleepy / short of breath/ lack motivation / trouble concentrating / etc)
The quality of fatigue helps to determine what causes are more likely and may be checked ..
A few examples --- hypothyroidism, anemia, asthma ...the list is very long ...
Discuss in detail with your doctor to help set up the most appropriate testing for the cause in your case
I hope this information is helpful for you
Let me know If you have further questions or concerns
I will be happy to get back with you
If my answer has been helpful and to your satisfaction then please remember to leave positive feedback
Thank you and Best Regards,
Anthony Bray MD