Flu like symptoms with diet change

Nicole • 27 ❤️ Milwaukee born and raised 🐄🧀🍻

So I’ve heard of keto flu but I’m not doing keto. I have cut my carbs down by over half. Eating mostly plant based with poultry. Weight watchers. I did it last year and had great success and never felt sick. Now I’m not sure if I’m actually getting sick or if the body can feel like this with any diet change. Thanks in advance :)