Strangest question ever.. Going #2?!

Tierney
Okay I know you're never supposed to push hard going #2. BUT sometimes it happens.
Has anyone worried about using these muscles and it affecting the pregnancy? In essence, these are the same muscles that push out the baby, so is it harmful to push for #2?? 
I KNOW this is a gross and awkward post... But someone other than myself has to be wondering this too lol