Hi there, 

You poor thing, this sounds absolutely awful. I can really sympathise with the Tonsilitis part of it. I used to suffer every year with it and would always need 2 or 3 courses of antibiotics to get rid of it. I'd have the sickness, headaches, temperature and all the horrible stuff in the back of my throat coming up all of the time. I was told that if it happened again the following year then they'd have to start thinking about removing my tonsils. That was about ten years ago and I haven't had it since, it literally just went and didn't come back. 

You'll have had this 3 months though and I'm sure I never ever had it for that long. I also don't remember ever coughing up brown phlegm.  I did feel dreadful though and  like I was about to die after weeks of it but yours sounds much more serious. It's great that your booked in for a biopsy but you're suffering so badly. Did they give you anything to treat the symptoms like a throat spray, or pain killers (strong ones) you could maybe try gargling with Himalayan rock salt (it's amazing stuff, it's pink and you can buy it anywhere now from Sainsburys to Home Bargains. You're probably extremely run down now because it's been going on so long and probably a bit low mood. I feel for you, it's horrible. Hopefully someone else will be along soon with some helpful advice because I would struggle with this too and it's so hard to know what to do. Big hugs for you. I hope you're ok at the minute. Xxxxxx