<s>[INST] hi.. Ive been waking up with blood in my mouth for the past year or so. And it only happens when Im sleeping. I would go to bed normal and wake up with a mouthful of blood every time i sleep. due to this, Ive lost weight, keep getting constant headaches and feeling weak all the time. [/INST] Thanks for your query, I have gone through your query. The bleeding for oral cavity could be because of the gum infection. It causes bleeding during morning time because during nighttime there will be any salivary function. The weight loss and headache could not be because of this. For the gum infection, you have to get your teeth cleaned, you can also use topical gum astringents like stolen. For headache and weight loss consult a general physician. I hope my answer will help you, take care. </s>