chills and fever like symptoms since starting this diet

I have been getting chills and body aches ever since starting my head hurts and it keeps happening my diet consists of bison,rice,potato,raw milk, oysters, sardines, mackerel cold pressed organic extra virgin oliuve oil, and finally chicken idk what im doing wrong in the morning i feel fine but its in the night my body gets hot and it’s just not enjoyable when I wasn’t on this diet i was practically fine. Could it be my (HIDS) hyper igd syndrome disease which basically means I am immunocompromised but just let me know next coarse of action.