Swollen and sensitive gums all of a sudden. how do i treat this?

Depends on the cause: Hormonal changes can cause your gums to swell and become sensitive. Meticulous oral hygiene will help keep the teeth clean and minimize inflammation. If it has been more than six months since your last dental cleaning, now is the time to make a phone call for an appointment.

Acute infection.: If your are stressed and not getting enough rest, this could be what used to be called "trench mouth" and requires immediate attention by your dentist.