Really concerned about my one large tonsil

I don't know where to turn but I have seen a lot of articles like this on this page so I thought I'd give it a go, I've been suffering with this for 5 weeks and it isn't getting any better, both tonsils are swollen but one is massive taking up over half of my throat, I've been to the doctors 4 times now. I've been given a 10 day course of antibiotics and finished it about 2 weeks ago, still no improvement. I'm in constant pain and have been relying on them throat sprays and pain killers but even that isn't working, it hurts to eat, drink and speak and when I talk it sounds very muffled, I don't have any fevers or temperatures. I had my bloods taken this week and the results have come back satisfactory. I don't know what else to do I'm so frustrated as I am not getting any better.