Occasionally i see spiders when i wake up, falling asleep, or really tired. could this be hypnagogic hallucinations or am i crazy?

Could be: These could be hypnagogic or hypnopompic (waking up) hallucinations although those are more often described as "vivid dreams." What's important is how long this has been happening eg lifelong vs weeks or months & whether it's part of a larger syndrome eg narcolepsy. An exact name or cause may never be found so then the approach is practical: Serious vs benign? Discuss this with your doctor.