I think its normal to feel that way. Especially if u dont workout much and a bit skinny. Your weight is a bit on the lower side. I would suggest to eat a healthier diet with lot of protein. Go for meat products.. If vegan.. Go for greenpeas sprouted or not
Next Steps
Try to get some exercise.. If u still feel not ok consult a doctor
Health Tips
Vitamin c rich foods would make u feel good.. Lemon juice, orange etc