I'm 4 weeks out I've had no problems what so ever until today I've got a pain in my left shoulder going into my neck,has any one else had this or no what it is?

The worst diagnosis that can be given is self diagnosis or those who aren't qualified. I recommend you call your surgeon or physician right away. This doesn't sound like something you should take lightly.

Call your surgeon and keep us posted!

If you were early post-op, I'd think it was gas. Since you are a month out, call your doctor. Good luck!

It was gas in the end.

My dr was concerned when I complained about pain in left shoulder

As it could be a leak so he did a upper gi

That sounds about right. But its best to rule out any possible clots. Glad you are feeling better