I had something very similar. I don't get the feeling in the throat but I do get the sensation that I cannot catch a deep breath. Feels like I need to yawn but just can't, like I need oxygen but no other symptoms. Feels like my chest won't expand enough. It's very annoying, i try to take deep breaths all day long and probably only catch it a few times.
I had this for 2 months straight, my doc said I was fine. I figured out why this was happening, for me anyway. My anxiety caused me to breath shallow through my chest. I was trying to fill my chest with air. This type of breathing is bad. I learnt to breath through my belly, to push the diaphragm down. Breath in, tummy goes up, breath out, tummy goes down. It took me some time to get used to it but haven't had the feeling since I started breathing through my belly, except when I get anxious and realize my breathing sucks.
Get it checked out to be on the safe side but it might just be how your breathing.