I'm not entirely sure what it could be, especially given the brief time period this pain afflicts you. There are a variety of tests that could be carried out to narrow it down, so if these symptoms are new to you and have not been investigated in the recent past then it's worth another trip to the doctor.
Have you asked the doctors if they would consider a UCTD diagnosis and treat accordingly to that to see if it helps your symptoms? The plaquenil, taken over the course of a few years, has helped greatly reduce my pleuritis attacks for instance which sounds somewhat similar to what you describe except it always lasted a least a few consecutive days for me. It has also nearly eliminated rashes on arms/chest/neck/face, and reduced joint pain too.
Good luck and post back to let me know how it's going. Take care...
Have you asked the doctors if they would consider a UCTD diagnosis and treat accordingly to that to see if it helps your symptoms? The plaquenil, taken over the course of a few years, has helped greatly reduce my pleuritis attacks for instance which sounds somewhat similar to what you describe except it always lasted a least a few consecutive days for me. It has also nearly eliminated rashes on arms/chest/neck/face, and reduced joint pain too.
Good luck and post back to let me know how it's going. Take care...