Do I have PSA?

I've been experiencing pain in my wrists and ankles for approximately 2 years now. I also get pain in hands, fingers, elbows, hips and legs with flu like aches. My eyes constantly stream and have done for a year now. I also have psoriasis in my scalp with a strong family history Doc reluctantly referred me to rheumatologist who did more bloods, they seem to have come back normal again. I don't get any swelling The rehumatolotlgist has referred me for a bone scan with dye, problem is I am needle phobic. So I've got a couple of questions and you seem like a friendly bunch. Does this sound like PSA? And can it be diagnosed without a bone scan? I've had x-rays and they came back normal