Gum bleeding and tooth pain while eating for several months are commonly caused by gum infection, plaque and tartar buildup, tooth decay, sensitive teeth, or early gum disease. Since your symptoms have been present for 4-5 months, it is important to visit a dentist for a proper examination and professional cleaning, because medicines alone may not solve the problem if tartar has collected around the teeth and gums. Treatment may include dental scaling (cleaning), treatment for cavities if present, and medicines or medicated mouthwash if there is infection or gum inflammation. In the meantime, brush gently twice daily with a soft toothbrush, clean the tongue regularly, floss carefully, and rinse your mouth after meals. Avoid tobacco, smoking, very sugary foods, and extremely hot or cold foods if they increase the pain. Eating foods rich in vitamin C, drinking enough water, and maintaining good oral hygiene can help improve gum health. If you notice swelling, pus, loose teeth, severe pain, fever, or difficulty chewing, seek dental care promptly because untreated gum disease can worsen over time. Early treatment usually gives very good relief and helps prevent further damage to the teeth and gums.