It's nothing like bhut, pret or deuta. As u mentioned dat u dnt sleep enough so it might b d reason. Tara Sabailai huncha bhanne pani chaina. Katti choti yo sab weakness Ko Karan le pani huncha so try to sleep on time. See for few days..
Dis happens to me wen i was in nepal and also many times as well even here in US . At that time I put smthing metal object below my pillow. And for real dat helps me a lot. Kei falam sirani muni rakhera Suta. I hope it will help u..

Take care!!!