Greetings!
These symptoms point towards depressive features.
I can understand it may be distressing for you to experience such sudden changes.
These features can be treated, dont worry about it.
Next Steps
it would be great if you seek immediate help as delaying the treatment often worsens the symptoms.
Health Tips
you need to set up a schedule in the meantime,set up time for physical exercises and also try to plan things that were of your interest earlier in your day to day schedule.