Its been happening to me too for the last few weeks and im almost 32 weeks. I actually threw up today coughing so hard after I choked on some water.
Omg I had this a few weeks ago all of a sudden and only during one week. For me it was ice cream that was the one that stuck out. I was petrified because it's so hard to catch your breath between coughs and it seemed nothing would clear my throat. Just be careful
I noticed that when i brush my teeth i have a very strong gag reflex. It seems that nothing can go near the back of my throat anymore without having that reflex. I suppose it's the body's way of making sure nothing harmful gets in to affect the baby. (I havent had it with food though).
I noticed I have a little trouble swallowing food of any kind.. it seems like it will not go down..