I've made an appointment with my GP but it's a 5 week wait 
Yesterday I started getting this discomfort in my chest like I swallowed a large object. I could breathe normally.
Over the last few days I've also started feeling this strange vibrating/rippling feeling in my upper abdomen. Central, just where below my bra. It comes and goes, and also happens after I cough (got a cold). It feels a bit like the feeling on your feet when a train or vehicles lives nearby, except not in my feet!
Any ideas?