Something really scary happened last night : (?

Ignore all these people who are telling you to see your doctor or psychologist! There is nothing wrong with you, you are not crazy or sick. This was obviously a very vivid and intense experience for you, but it is normal. Sleep is a wierd and wonderful phenomenon, and waking dreams such as you had are not fully understood even by sleep experts, but what they do understand is that sometimes the brain can be half awake and half asleep, resulting in bizarre experiences like you had. Sometimes people experience vivid hallucinations just before falling asleep or waking, known as hypnogogic and hypnopompic hallucinations. Sleep paralysis is when you wake up but your body is still paralysed from sleep and you can't move. All of these things can be very vivid, intense, and scary especially the first time it happens, but all are totally normal and not indicative of any psychological problems.