Feeling tired, sleepless, lack of interest, unable to concentrate all are symptoms which suggest that you are stressed out. If these symptoms are part of for more than two weeks then it can be part of a depressive disorder also.
Next Steps
kindly consult a psychiatrist who can guide you further. Check your
thyroid and Haemoglobin levels also.
Health Tips
Maintain a healthy diet and sleep pattern. Do exercises daily. Be with family and friends. Avoid too much caffeine and junk food. Avoid being alone. Wishing you all success.