I'm sorry to hear that.
If you need the steroids to be able to walk then take them. Yes, the side effects can be unpleasant but if it makes the different between being able to move or not then some things just have to take priority.
Yes, been on Methotrexate and all kinds of other treatments, it's touted as the "gold standard" treatment for RA. I have been on it on tablets and self injections ("sub-cut"), from lower to higher doses and with and without other RA drugs at the same time.
My experience was that I found the side effects harsh and it kept raising my liver enzymes BUT many people take it without any problems for years with no or minimal side effects. The side effects do tend to decrease when stable on a dose for a while.
If you can tolerate it, it is a good maintenance drug and taken with some other drugs so if you do get side effects which continue or are really not nice then speak to your GP/Consultant or the Specialist Nurses.
Usually specialist nurses have a helpline in the department and can be enormously helpful so worth checking about that.
I have had advice and other meds which help to cope with some of the side effects, which has helped in the past, such as if you get any nausea or heartburn symptoms etc... if they are causing a big problem.
The folic acid is important and it can reduce some of the side effects.
Kicking in wise, as with many of the general drugs, rather than steroids, they can take a while, around three months I think for methotrexate but, again, everyone is different.
It can be seen as a scary drug and if you Google it, save reputable sites like Patient UK, Arthritis UK and NRAS (last two very helpful!) then it can make you unnecessarily nervous about the drug. It can take a while to get used to some of the what can or can't I take with it but just takes a bit of time and experience.
Useful to keep something with you with your dose on to show any GP/pharmacist to make sure you aren't taking any drugs which shouldn't be given with it, e.g. trimethoprim for UTIs. Some GPs won't think to check and I've had to ask for a different antibiotic a few times.
It really is a good mainstay drug and, as I said, many people take it for many years with no problems at all, I was wondering whether to post or not as it's just a drug that has never really agreed with me.
Hope some of this helps though. Not sure how it works on private but my department runs patient education mornings, which are really informative! Even had a general (not just RA) open day a few weeks ago with the staff and charities, physio, occupational health, researchers etc... there, great afternoon! There are always lots of leaflets around too but most can be ordered from NRAS/Arthritis UK.
Always good to speak to others who have it too though, it's not a very well understood condition by people generally who tend to confuse it with osteoarthritis, be prepared for all that :)