Hi Rachel
I've had hypnosis to several times to help with my anxiety and depression after we lost Charlie, and also coping with IF.
DH and I had been going for counselling and the counsellor (who is also a qualified reflexologist and hypnotist) suggested that hypnosis might help me. I was a little dubious but desperate at that point in my life so gave it a go.
Basically we discussed what I wanted to get out of the experience, then I sat in a chair and tried to relax. She talked about breathing deeply and some mental imagery, and I could feel my body getting really heavy. I never felt 'out of control' (i.e. no dancing chickens!) and did think that if I wanted to I could have got up and walked away, although I never did.
After a while (no idea how quickly/slowly time was passing) she counted to 10 and said eyes wide awake and I was back in the room again.
I had several sessions (about 10 I think) and they ranged from sitting there in floods of tears, to feeling totally relaxed, to actually smiling. I have some pretty vivid memories of things that I thought about whilst 'under', including one memory where I was sat in a hospital ward holding Charlie - something that never happened but the memory is very comforting....
I think that hypnosis only works if you trust the person completely, and are open to trying it.
I know several people (other than me) who have also found it really helpful, but also a few who have thought it is stuff and nonsense

I guess the only way is to try it and see

Good luck!
Deb