dude my stomach

Kira
So I'm like 7 days late and don't wanna take a test bc I'm scared of the BFN..so I rather just wait 
But anyways today marks the third day where my stomach been killing me..I haven't been eating bc I would have to poop afterwards, laying down positions,  even smells would get to my stomach 
This has never happened before and idk how to handle it