You have some of the strangest complaints, Dayton! haha
The first thing I found: "Pain in the abdomen while swallowing is a symptom that can throw off even experienced doctors."
...not the best start, but I did find a few possibilities:
Achalasia: "an esophagus-related condition that may cause the sensation of pain in your stomach...Along with stomach pain and difficulty swallowing, common signs and symptoms associated with achalasia include vomiting undigested food, chest pain, heartburn and weight loss."
I kind of don't think that's it.
Esophagitis: "may cause stomach, or upper abdominal, pain when swallowing. MayoClinic.com states esophagitis is inflammation that damages tissues in your esophagus, or the muscular tube that carries food from your mouth to your stomach...Common signs and symptoms associated with esophagitis include stomach pain, difficulty swallowing, painful swallowing, chest pain that occurs with eating, nausea, vomiting, regurgitation of saliva and decreased appetite."
GERD (acid reflux): "When acid flows from your stomach into your esophagus, it irritates your esophagus, causing pain or discomfort. Common signs and symptoms associated with GERD include difficulty swallowing, chest pain, stomach pain, dry cough, sore throat, regurgitation of food and the sensation of a lump in your throat."
Hiatal Hernia: "occurs when part of your stomach pushes upward through your diaphragm. Your diaphragm normally has a small opening (hiatus) through which your food tube (esophagus) passes on its way to connect to your stomach. The stomach can push up through this opening and cause a hiatal hernia... symptoms include heartburn, belching, difficulty swalllowing and fatigue... can be caused by persistent and intense pressure on the surrounding muscles, such as when coughing, vomiting, or straining during a bowel movement or while lifting heavy objects."
Maybe this one is it? You've been working out, haven't you? Maybe the heavy lifting is what started this. (I don't think it was the cranberries.) :)