Concerns with Protein shakes during pregnancy?

Of course I'll talk to my doctor but I wanted to know if you all had heard of any issues with continuing to drink protein shakes while TTC/pregnant?

Particularly the sugar substitutes? 

Thanks!

I haven't had any issues and I'm almost 37 weeks and just had an ultrasound yesterday and everything is good.

thanks again Alice! Another question for the doc next month! :)

Depends on the type.  Soy protein can mess with your hormones.