Oxygenate your room in case you have carbon dioxide poisoning. If this persists and it becomes too much out of the ordinary you should visit a doctor for eye checking. But never tell someone else that you see creatures or your beliefs. Just black spots and a routine checking at most.
Seeing black spots, flashes, lights, are normal when advancing. Black thoughtforms are to be ignored and it means you should clean yourself more often without too much worry. Don't interact with things you see and focus on positive things. Be mindful of what is real and what can be delusion or mind impressions. Our mind is very malleable so if you believe truly in something you create it to your senses to experience.
Also, don't be so influenceable and impressionable, from something minor most people exaggerate to themselves things, so it is very important to be sincere to yourself.