Help me if you can I'm feeling down.

Help please! I am so in the belief I have narcolepsy. My mother, sister, grandmother, great grandmother, and her sisters all have or had it. I went into a sleep study but I was too nervous to sleep because I have a major anxiety problem. I don't have sleep apnea, and my mom insists it's the medication I am on. I do have a long record of pleurisy, but it hasn't effected me other than pain. What do I do? Every female in my family has had it and I am the only one who doesn't? When I'm constantly falling asleep in school, movie theaters, plays, wherever I'm comfortable, I'm out in less than three minutes if that. I've randomly collapsed at scary situations and they thought I had epilepsy! What do I do?!? Help, please.