Suggest Remedy For Soreness In Throat

I am a 49 year old woman, diagnosed with Lofgrens sundrome 2 years ago but have recovered and am otherwise well. I do however suffer badly from anxiety and particularly health anxiety. For the last few weeks I have had a peculiar taste in my mouth. It's difficult to describe but it tastes a bit gluey like when you lick an envelope. Also mucosa and tongue are sore at times as if I've burned them (but I haven't). From time to time throat feels rough,like something is stuck in it (I keep having to clear it). My taste for food and drink is all normal although I think the gluey taste might be more noticeable when I drink water. I have had blood tests - RBC, WBC,ESR,glucose,Vitamins,liver function - all normal apart from the GGT which was a little raised (dr said this was probably because I'm overweight - I don't drink alcohol).I am incredibly anxious over this - wondering if it could be some sort of cancer - stomach, pancreas, colon etc or a brain tumour affecting my taste! Could the anxiety be causing these problems or perimenopause? Do I need more investigations or can I stop worrying?