I had a very bad episode of headpain, which also affected my cognitive function, since then I can feel something moving in several different place. It's same tube like shape, I felt it in my arms, upper arms, abdomen . I think it's an embolus which is getting stuck in small blood vessels. Then it travels to next site and I can feel it again. It's so hard to get any doctor to believe and do the right scan. Please help if you can. Thank you.