Hi Abol76 welcome to HW and the RA forum
I take MTX, but orally not injections. I also take pred but am weaning off that.
With the MTX, give it a few months to kick in for your RA, see about taking folic acid (it helps with the side effects) and I drink lots of fluids the day I take it as it can give me headaches and fluid seems to help with that.
Good luck and I hope the MTX kicks in quick and makes your pain more tolerable.
Crohn's Disease, Ankylosing Spondylitis
Bowel Resection Sept. 07