I was experiencing dull ache around my lower right second molar for about 2-3 weeks.

I went for a dental checkup and had my teeth cleaned by a dentist under local anasthetics in 2 separate sessions (2 days apart), the first session for the right side and second session for the left.

After the first cleaning session, I became very sensitive to cold and hot on the lower right molar.

About 10 days after the fist cleaning session, I started feeling pretty sore around my lower right second molar and noticed that my gums beside and behind it were swelling.Have been rinsing with warm salt water and savacol. It's now the 2nd day since the noticed swelling and i see some tiny white spots on the swelling part of the gums.

Am wondering if anyone had any idea what could be causing this.