I got my wisdom teeth removed 3 weeks ago and I thought I was almost completely healed. My bottom left tooth had completely closed and then today I noticed this large blister covering where the hole was and on my gum. I irrigated the area with the syringe and the blister popped and released a lot of liquid. The area is still tender and the skin seems loose. It also seems like I reopened the hole in order to pop it. Do I need to contact my oral surgeon or should I wait it out a few days?