Hi Carolyn. When did you eat these plums? How long after did you develop the bloating?
Yes, you could try simethicone. It is an over-the-counter capsule that breaks big bubbles in the intestines into little bubbles. This allows the excess gas that is trapped to move along faster and get out of your system. You might also consider an enema to help promote colonic emptying. These are also available without a prescription. If these don't work, please see your GP to make sure there is nothing else going on that might complicate your recovery.