You can take part in the course up until embryo transfer only. Once you have had the transfer I treat you as if you are pregnant and I don’t recommend you doing any yoga poses until the end of the first trimester.
Do not do any of the yoga poses (not even the restorative poses) in your 2-week-wait. Just practice your breathing techniques and Yoga Nidra deep relaxation. If you are pregnant then no yoga poses till the end of the first trimester. If you are not pregnant you are able to take part in the course.