I understand your pain (literally) and frustration.
I was told by a locum GP that I just needed to lose weight, when I first approached them asking for help. After a further four or five months of struggling on, I saw my usual GP, saying I was losing weight, but the pain and stiffness was just as bad. She arranged blood tests and it came back with huge RA indicators.
I went through many medications over the years, including methotrexate, and when that failed, sulphosalazine. Then that failed and the rheumatologist tried me on something else (I can't remember what it was).
I had an appointment with the rheumatology nurse after about six months, and when she asked how I was doing, in my usual way, I was breezily saying "yes, I'm fine", when in fact I was in excruciating pain. She gave me "a look" and said "ARE you?"
I burst into tears saying "no, everything's so painful". I got a telling off for not saying anything sooner and I was then upped to Enbrel weekly injections. There were various hoops to jump through to be accepted for this, due to its high cost. One of those hoops had to be that you had tried methotrexate and that it had been unsuccessful.
They were AMAZING for about five or six years, but ultimately they stopped being effective, and I was upped again to Rituximab infusions, which I call "my magic medicine". It is delivered in two doses, two weeks apart, as a day patient in hospital, and they are done every six months. I am literally symptom free with them.
Over the pandemic, they were stopped, and it took until November of last year for the symptoms to reappear. And boy did they reappear. Within a couple of weeks, it was so bad that I was bedbound. Couldn't get dressed, couldn't raise a brush to brush my hair, couldn't wipe after using the toilet, couldn't open my mouth to eat. It was awful. Thankfully I am back on my Rituximab regime and 99% symptom free. I've only had one set of doses, and due the next round in June.
I really hope you can get some answers to your pain, even if it turns out not to be RA. I wonder - would you be able to pay for a well woman check up with BUPA, to have some comprehensive tests run?
Pain is such so debilitating, and the thing is - you don't even "look ill".
Don't be like me, and not say how much pain you're feeling. You need to be vociferous and really push home how much this is impacting on your life.
When I was in the first throes of being diagnosed (I was in my 40s), and still trying all the medications that were failing, it was literally the only time in my life that I seriously considered suicide, as I couldn't contemplate the next 40, 50, 60 years in that degree of pain.