Sudden feeling of fear of something bad happening, worrying, not able to relax or sleep well, bodyache, headache, poor concentration, etc can be important symptoms for an anxiety problem. Your complaints suggests a possible anxiety condition. A detailed history about symptoms and associated risk factors is needed.
Next Steps
Kindly consult with a psychiatrist. You can ask a direct query here on practo or visit one nearby you.
Health Tips
Do not worry. There is a solution to your problem and it is treatable.