Leakage? I had a mastectomy 7 years ago.

yes, with implant companies usually recommending MRI scans periodically every 3 years or so, perhaps further investigation would be helpful especially with a history of mastectomy.. best of luck

If its been seven years then yes, absolutely time for a MRI!  I would see your PS and he or she can check for signs of capsular contracture or masses.  Acute localized burning sensations may represent other issues and a good thorough physical examination can help with this

Anytime you have a significant change in symptomatology, then it warrants an exam in person to be properly evaluated.