Slow poison in my food. What can i di?

Hello doctor i need your help i was a college student i was in my friends house for 2 Months I was so good in my way i was eating food in my friends house for 2 months i was good before after eatin food for 2 Months i was so sick my weight reduced my symtoms are like felling like dry mouth anxiety Dizziness fear confusion my legs and and shakes i thought some thing bad is happening to me i went to nerologist to checkup my health he done mri scan blood test ecg everything showed normal and prescribed some medice after taking the medicine i am still sick feelin same symtoms like before some of my family member said me in your food some one added some kind of toxins she said go and consult a toxicologist i am so confused give me advice what can i di