I have had a fluid filled bump on my top inner gums above my molar for a couple months. It gets really full sometimes, then a few days later flattens out, but is still really squishy. It started giving me neck pain, and then really terrible migraines. I have really bad teeth and broken back molars, and also all four wisdom teeth are impacted and almost halfway out. Do I have an abscess? If so, with the neck and head aches, am I getting a blood or brain infection?