Last Sunday, I ate some leftover cheese pizza w/olives and mushrooms and experienced a headache (entire head), like my brain was being squished, accompanied with an burning ache in my diaphragm. I was thirsty, but drinking water didn t help. Since then I am dizzy and lost my appetite. Still drinking lots of water to no avail. Sometimes I feel like I have a low grade fever, but I don t. I feel very anxious and this is NOT me. Can you advise?