Did you know that IBS symptoms can first appear after pregnancy? Pregnancy is a time of massive immune and hormonal shifts—and for some, it can flip the switch on mast cells. When mast cells become overactive, they release a storm of histamine and other mediators that irritate the gut. The result? Foods you once tolerated suddenly trigger bloating, cramping, or diarrhea. This is because pregnancy can induce fulminant mast cell activation, changing the way your gut reacts. If your IBS started pos