Question: Swelling in my joints…. I’m unsure what is going on

So I’m a 31 yr old female ,
I have been getting continuous blood tests done and my ASO titre is sitting at 800 . swelling in my joints if i sit for periods of more then 1.5 hours at a time , I had a high lymphocyte count which has finally gone down to normal , it took around 3 months to do so .. i have been referred to a rheumatologist , im unsure what is going on can some one please explain to me , as im feeling anxious and confused , also waiting on my thyroid app as i have multinoduler goiter and also breast lumps that have recently been told they were benign but one has grown a little , not sure if that has anything to do wth my high blood tests ?

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