Hi
I've been using guided imagery and though I'm not pregnant yet, I feel very good about doing the imagery work. For eg. even if I'm in a bad space about not being pregnant when I spend some time doing the imagery work I feel more positive about it all and like I'm on the right path. The site I got it from is https://www.fertileheart.com/
and I also read both her books which were great, though the first one Inconceivable was a stronger one. These aren't specifically for IVF, but they're great exercises.
Hope this helps, RR