Prolonged orgasm out of nowhere?

Mara • Bi // pisces // portuguese
Towards the end of work, all of a sudden I started getting the same feeling you get when masturbating in my vagina (don't know if it was my clit or vagina) 
It lasted for about an hour but is this normal? I was kinda freaking out and couldnt keep still, I had to keep going around to try and distract myself bc I felt like if I kept still I would be making noises. I also had the strong urge to just have someone hold/hug me and just stay like that??
It hasn't happened since (2 weeks) and hasn't happened before. Any ideas??

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