Thanks so much for your replies

Wow...you guys are super fit...leesa, you are a machine! I struggle with the plank for more than a minute lol!

I'm going to go to the afternoon class tomorrow and I'll be sure to let the instructor know but can I ask a stupid question....should I not be laying on my back now? I thought that you should not lay flat on your back from the 2nd trimester but maybe I have that wrong?