Your symptoms clearly point out to the diagnosis of gum inflammation called as gingivitis and this is because of hard deposits On The Teeth which cannot be removed by tooth brushing. You have already delayed the treatment for a very long time and it is highly advisable that you visit a dentist for teeth cleaning by procedure called as scaling. This will be important so that your symptoms can be alleviated permanently. Cleaning your tongue with only a toothbrush and not tongue cleaner twice a day is very important. Equally important is maintaining adequate level of hydration. Regards

Hi you are suffering from Gum problem ..there may be deposits on you teeth that lead to swelling on the gums and bad breath..you need professional cleaning and polishing of teeth ..