WarpMyMind

Having something of an issue with attempts to trance here. It isn't that I can't get trance though, I have managed that, but every time I try to for some reason my pulse get impossible heavy and loud. Not quick though. It gets so bad that I can feel it everywhere against my skin and it drives me insane. The second I try and stop the hypnosis though, my pulse quiets back down to unnoticable levels. I've tried nice calm breathing, but that doesn't seem to work. What's going on?

It sounds like someone who has hypnotized you in the past has erected a post-hypnotic barrier of some kind. It probably has its own trigger/key that will either:
1. allow only the original hypnotist through, or
2. (If they were truly interested in your protection) only allow you to be taken under in real time by a "trusted" hypnotist.

You probably won't be able to be affected by any self-hypnosis media until you get that worked out.

No, I haven't been hypnotized before. And I've been practicing with the Bubble induction for a few months now, and I've successfully gone into trance before. I've also attempted self hypnosis before without this ever happening. This is something that's been showing up only in the past week.

Could it be that the relaxing of the rest of your body exaggerates your heart beat, I had similar problem, never as bad as you say, but it got better with practice, years worth though, but I'm off and on so to say.

Is it possible that you are having an anxiety attack either because you are so excited about the possibilities presented by the session or because at some level you are actually afraid that it might work and really transform you in some way?

Well, no, I've been practicing with different inductions for a few months now (since July actually) until I can comfortable trance consecutively each time. I got over the excitement/terror of what hypnosis could do (well, the amounts that made it distracting at least) a while ago. This reaction is something that's been happening in just the past week.