Hi there, I'm kinda new
To your question I am 26 and a young man, and don't have or haven't gone thru exactly what you are going thru, however I have gone thru some things with anxiety, extreme panic, and depression. As well as a neck injury and all sorts of nerve issues because of it, and have been thru the whole sleep thing like you. I do know that anxiety will make you feel,. Weird things, especially in the area You're most concerned with, and yes it can definitely go and come. I have got better and over a lot of the anxiety but still always have pains or spasms in my neck area just because its always on my mind. Because when I'm busy I hear or feel nothing in that area??. I just know anxiety has a funny way of switching sensations or feelings up right when you get used to that particular sensation,. Kind of a way that circle keeps itself going. It horrible. If I have been cleared by your dr. And are ok with what he thinks...it may very well be your anxiety..,its just very hard to pin it to that when I know you feel deep down it can't be, it has to be something else???. I went through that for soooo long and still do sometimes. I just pray. Ask myself again. See how I feel a little while later, try and see if I've felt this before and how often and what happens afterwards...usually nothing?. I hope you understand what I'm trying to say haha. But I've been up all night dealing with some issues as well. But also know how much it helps to have someone respond that can at least put unat ease for a bit.
it always helps me, and that's what we're here for. Hope you get to feeling better!!