Omgg i found my peoplee   Σ(っ°Д °;)っ I had the same problem and unfortunately it only got solved when i switched my classes to the afternoon. 
Nobody asked for this but in MY humble experience, i need to eat something with fiber like an apple and have a latte to kickstart my whole bowel movement and it's impertinent i wake up 1 hour or more before i've got to leave. And what i found as a constipated gal is that you cannot be anxiously waiting to get the urge to go to the bathroom cuz that'll have the opposite effect (fight or flight kinda reaction). So i try to relax while eating my breakfast and watch a funny video or something. And if i do every step right i usually can go. To everyone with a stomach problem, just remember that hot people behaviour                                            

		
I hate morning poop. They make me late for class