Bleeding and swollen gums?

Hello, I brush my teeth almost everyday, and usually use listerine. I'm 23, and i see my dentist every 9 months, I last saw them about 8 months ago. I had a big burn on the roof of my mouth, and I pulled the skin off, OUCH!. However since then, ive noticed that my gums have hurt and bleed, there swollen as well, oddly its almost all my gums, not just one or two? This was very sudden, it happened literally in the past 2 days. I currently don't have health care to cover this… I live in Vancouver. Not sure what to do, any tips on the ordeal.