Hello young lady. Your symptom seems very unclear. Will require detailed evaluation. But on preliminary basis I think this may be  hypnogogic hallucinations which are  weird sensations or perceptions during onset of sleep .They are common. Pls visit a psychiatrist. Or it may be a symptom of some underlying sleep disorder.

Your description of experiences suggest a normal phenomenon called hypnogogic hallucinations. Hence nothing to worry about. Best wishes.