WHY DID I JUST EAT A MOTHER FUCKING CUP CAKE????!?!!

Ughhhh it burnnnnnnnssssssss!!

During pregnancy, the placenta produces the hormone progesterone, which relaxes the smooth muscles of the uterus. This hormone also relaxes the valve that separates the esophagus from the stomach, allowing gastric acids to seep back up, which causes that unpleasant burning sensation.