<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had some bleeding when brushing my teeth very unusual for me I thought it may be an alergy to a new toothpaste i started using.. Pronamel my teeth became so sensitive i had to use a staw to drink everything..hot or cold then i woke one morning my whole face was swollen.when to ER..and was diagnosedtreated for a sinus infection ..some swelling went down and I noticed a bump over one of my front teeth..pussey at times..I have since seen Doctor and dentist ..taken several rounds of Penicillen and Amoxicillian ? and now on my 4th round of Doxycycline ..that seems to help the mostno puss now just a red bump still remains. My dentist said I may need root canal or just rootcanal therapy..to see if if goes away with these anibiotics ..if not to follow up with the root canal..ithink I may have cracked a tooth while eating like biting onto a grain of sand about 6 months ago..  <response>: Hello, Bleeding during brushing and flossing suggests gingivitis. Plaque and food accumulates in relation to teeth cause gingivitis. Gingivitis can also occur because of vitamin C deficiency. To avoid bleeding during brushing, it is important to brush and floss regularly and maintain a good oral hygiene to avoid deposits around teeth. You can also use a mouth wash to reduce bacteria in your mouth. Mouth wash is a chemical adjunct to plaque removal. If gums are swollen, then you can do warm saline rinses 3-4 times a day. Take more of lemonades and citrus fruits or vitamin C supplements if there is deficiency of vitamin C present. Without clinical examination, it is difficult to give definite diagnosis. You can refer to an oral surgeon or a pathologist if you are apprehensive. 