More likely you're reacting to the sorbitol found in stone fruit. Not an allergy but an intolerance. You should be careful with peaches, plums, cherries any fruit with a 'stone' seed. Nausea, stomach pain and cramps are symptoms. It's often a component of fructose malabsorption or can occur on its own. And it can occur when you're older, especially if you've had other gut issues, have taken antibiotics or changed your diet, as that will often cause your gut flora to change. The symptoms are caused by the sugars which can't be absorbed feeding bacteria that probably wasn't as prevalent before.