Could this be psoriatic arthritis?

I am 39 and have had pain in my big toe joints for the past year and a half. At the time I started feeling pain, I had x-rays done and blood work taken to check for inflammatory arthritis. Nothing showed up on any of the tests. Multiple doctors had different opinions on what was causing the pain, but eventually settled on the decision that it must be the early stages of osteoarthritis that just wasn't showing up on x-rays yet. (Though by the time I got this diagnosis, they could feel/see some bone spurs over the joint.) So, this seems like a reasonable diagnosis, but given that there's no real evidence it's still just a guess. And the thing that's bugging me a bit is that my toenails on those particular toes have been a bit "gross" for 3 or 4 years now. Not bad enough that I saw a doctor about it, but when I started googling joint problems, I came across psa and I think the nails do look like they have psoriasis. They have extra white at the ends where the nail has detached, I have a salmon spot on the nail and they are bumpy. None of the classic pitting on those nails. My fingernails are pretty okay, but I have a single pit on one nail and a splinter hemorrhage on another. I DON'T have skin psoriasis. However, my sister does. It's important to me that I get a correct diagnosis so I can get proper treatment. But I am loathe to go to the doctor looking like I was googling for diseases. If my arthritis is inflammatory, then I think psoriatic arthritis is a decent possibility. However, I don't have morning stiffness and my visible swelling is quite minimal. I recently had significant swelling after a run, but I don't know if that's considered inflammatory. For those of you with psa, did any of you not have the classic symptoms of morning stiffness and swelling in the early stages? Thanks.