I had a tooth removed months ago,in the last month a boil came on  the next tooth (upper left front.I broke it and there was puss and blood and behind my palate there was a heavy build up of something which drove me crazy,since then I took twenty pills for 10 days,the stuff behind the palate went and it seemed the swelling and puss was gone...now only days after finishing the pills I am back where I started,except now I also have a terrible taste in my mouth..help
Hellooo...read through your query....according to symptoms explained by you, it is an abscess.but origin of it can be diagnosed(whether it is tooth related or periodontal related) can be said based on clinical view and also on X-ray.since it is opening into palate.it can be infection of the root of upper lateral incisor.bad taste is related to the puss and exudate still oozing through your teeth.to stop it u have to remove the cause.for that u have to meet dentist get a X-ray and get the treatment done.if its periapical infection root canal treatment followed by crown.if periodontal have to undergo scaling etc.till then do salt water gargle.maintain good oral hygiene...meet the dentist soon...(y to suffer if u have solutions and experts to solve your problem).nothing to be worried be cool.hope your benefitted something from this.have a healthy day!!!