i have been feeling the same way. I've been feeling so sick to my stomach feeling like i need to throw up, randomly out of nowhere my head feels so heavy like its hard to keep it up and pain in my neck, and also feeling weak and very tired and a little bit of dizziness, this just started a few days ago and on top of that ive been having diarrhea. I honestly have no idea what's causing that .not sure if its worth getting seen or not. Prayers it's nothing serious.