had this the other week after every time i ate, didn't want to eat because of it at first, but then i was 99% sure it was trapped wind & muscle tension for me, i had trouble swallowing because i felt like my food was going down my back (as that can happen if it goes down the wrong way) but it wasn't, but still i was making a conscious effort to swallow properly which was likely tensing me up and making it difficult. you're probably having trouble swallowing because you're tense from feeling anxious about the shoulder blade issue. i stopped worrying about it and drank hot liquids with my meal and just let it happen if it wanted to and it went away after about a week or so, i'm sure yours will too