I Banged My Gum With My Toothbrush Hard Enough To

I banged my gum with my toothbrush hard enough to get a blister about 2 years ago. I went to see a doctor at the time and he popped it for me. It was still sore and about 6 months later a new blister came back but on the roof of my mouth. I never though too much about it until recently when I can notice it putting pressure on my teeth. Should I attempt to pop it myself?