Hello
You seems to be suffering from Acute gastroenteritis which will require treatment. You need to show yourself to a physician as it can worsen.
Next Steps
in the meantime you can increase you intake of liquids in the form ORS tertapacks as many as you can drink. you can take one pantop D to help you with your vomiting. you will probably require antibiotics or probably intravenous fluids. eat light meals liek khichdi with curd to help with the loose motions.
Health Tips
your condition can worsten. keep your fluid intake adequate