What Causes Pulsating Lump In Neck And Abdomen While Having Ankylosing Spondylitis?

I have a lump in my abdomen that is approximately 1 inch long. It is too the right of my belly button. it has been there for about two years now and sometimes it looks like it has edema around it. It is bean shape, movable and painless. I have had a physician tell me that they thought it was some sort of scare tissue. I also have found one in my left upper thigh, not painful, but leg does sometimes ache if I sit for too long. I now noticed about a week ago that I have a similar lump on the side of my neck. I have always had a palpable pulsating lump in my upper neck that comes and goes, But this one is below it. I feel like sometimes it is difficult to swallow, ear fills full and that side of my face feels numb. Also over the last few weeks there are times that my vision gets blurry and I feel as though I am going to faint. I was diagnosed with ankylosing spondylitis about two years ago. Over the last year I have gain almost 30 pounds and cant get it off. I have never had a weight issue. I am a 40 year old female