My understanding is that as long as your nutrition is supporting your training (i.e. you have enough nutrients and body fat to maintain normal menstruation), you should be fine. There are no specific moves to avoid. I'm at 27 weeks and am still doing double unders, for example, so it's not like they make things fall out or anything.
The biggest problem I had when TTC was not exercise (I continued Crossfitting and running without a problem) but that I stressed out so much about what to do and what not to do that I actually screwed up my cycles. I still got pregnant very quickly (four months of trying), but I missed a period one month and had a late cycle another month in large part because I was so psychologically focused on conception that I was stressing my body (and my poor husband). In my experience at least, try to not focus on what to do to conceive (unless you have a history of difficulty). The best thing to do is rock your workouts and use them as a stress-reliever from the psychological toll that TTC can take. Good luck!