Slow poison. Me advice what can i do!

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 from thiere home i am so sick my weight reduced my symtoms are like felling like dry mouth anxiety Dizziness fear confusion my legs and feet shakes upset in stomach 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 like Tablet petril plus tablet benthai forte tablet calrig plus tablet vetahist 48sr tablet Nuro d3 (once in a week) 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 Like slow poison she said go and consult a toxicologist i am so confused give me advice what can i do