Hi Robs, that sounds nasty and is probably worrying you a lot. Some of them have such a horrible taste when you can't swallow them straightaway don't they, and that maybe makes you a bit more tense next time you try. I guess it might be something to do with the shock of all the worrying and waiting you've been going through.
I have quite a few tablets to take, some of them pretty big ones, and sometimes find them a problem to swallow. When that happens with any of them I take a lot of water into my mouth and push the tablet between my lips, so it starts off being surrounded by water in my mouth and is often much easier to swallow. Not 100%, but a bit better rate of swallowing more easily. It's surprising how often the phone rings or somebody rings at the door, or something says something really funny on the radio - just when I'm concentrating on this mouthful of water and tablet!
Hope all is going well with you, misbehaving tablets aside. Hugs, Jo x