I advise you to have examination from dentist. Remember to deal with problem of swollen gums, you have to know the CAUSE! Don't just GUESS the solutions! It won't help too much. That's why the problem came back in your case. Usually it is caused by inflammation of gum tissue. Only mouthrinse won't help! The mechanical cleansing plays important role in eliminating the cause. Professional cleansing from dentist may be necessary if there is periodontal problem. Hope you understand the important of relationship between the cause of a disease & proper treatment.