Lost interest

I am 26(F) pursuing PhD from an IIT. for some reason I have lost my interest in the research, whole day in lab I keep thinking of reaching to my room, and as soon as I go back to room I lay in my brd and scroll mindlessly till I sleep. I am sleeping like 10hrs. Have no Friends here, neither i want to have. Don't want to speak to anyone. I don't know where am I headed. I thought it happens sometimes. But it's been the same from 2 months. Any advice?