I suffer from sleep paralyis and i sometimes experience a massive heache during. what is this and is it harmless?

Possible narcolepsy : You are at an age where you could be developing narcolepsy. Sleep paralysis is a well-known symptom of narcolepsy and it can occur alone and be benign or it can be an illness of its own or it can occur as part of narcolepsy. More than 50% of people with narcolepsy also experience migraine headaches. I would recommend that you see a sleep disorder specialist who specializes in neurology. They will be able to run the necessary tests and provide the evaluation you need to come up with a more comprehensive understanding of your condition and outline appropriate treatment for it. Best wishes.