Does this sound like histamine?

Hey everyone,

Former vegetarian. Been eating everything now, for a few years. When I eat fatty animal proteins, the morning after, I always spike a fever. It sheds after I pass a stool and time. My body aches and tension headache in the eyes after eating about 5 hours later. No rash and no allergy test results for the skin prick. Primarily with fatty cuts even tuna. Would love your thoughts and experiences. Thanks 😊