Unusual Sleeping Patterns

I’ve been sleeping 7/8am-5/7pm most days. So I stayed over at my cousins Saturday night, and cause we had to leave early I didn’t go to sleep at all. About half 12 I was nodding off. By about 4, sleeping for a few hours of so. Woke up at 10:20 and slept till 2am. I was up for about an hour & 1/2. Then slept till just before 7, up for another hour. Then back to sleeping every few hours. Waking up, 11, 2, 5, and now 7. I’ve never sleep for so long and still be so tired that I could go back to sleep. I think I’ve had about 28 hours.