I read that RA affects the pelvis and hips. PsA affects the SPINE and much harder to deal with.

A lot of times if you have bad hips the pain will show up in the groin area first. Have your hips X-Rayed or get an MRI To make sure everything is ok with your hips.

I had very bad groin pain went go ae few years ago told me I need new hop gave me strong pain killer's didn't work my son told me take fresh ginger and lemon it went in 3 days just goes to show you I didn't need hip operation

Could be psoas muscle. Very common complaint. Melt method is great for fixing it.

So...do these abdominal pains feel like back pains, or feel like possible kidney inflammation?
I have had a kidney infection before and my back is aching again like it did then. I had not been diagnosed with Rheumatoid Arthritis back then. Or am I blaming too much on the RA?