1.2 weeks is a long time.need to rule out any recent change in diet/ place first.
2.Please send a stool sample fir R/M and C/S to rule out any infection
3.cbc,blood
sugar thyroid profile are few other tests that may help.
Next Steps
Better to consult with more details first so that other significant tests may be advised
Health Tips
for good health in general
https://www.myhealthclinic.org.in/lifestyle-medicine