Broken ribs can take a long time to heal and cause a lot of pain. I had two of mine broken in a fall this spring.
Ideally, you should not have bound yourself when it happened, mainly because one of the worries with broken ribs is that people take shallow breaths and wind up with either respiratory problems or atelectisi, (some of the small alveoli in your lungs collapse). Rock or hard place for you.
I would be more concerned about the two spots that have resurfaced with pain. The safest thing to do would be to see your Dr. If he/she knows you are a transgender, it won't be as hard to talk openly and get advice that will take your need to bind into consideration. If not, you may have to come clean.
Tell your Dr. about the original problem, along with the binding and go ahead and discuss the new problem. Find out what the problem is and how you can safely bind to prevent making things worse. The need to keep yourself as male in appearance can over rule common sense when it comes to medical problems and treating them. At one time or another, I'm sure many of us have forgone safety for the sake of keeping our psyches comfortable.
Off the actual break subject, make sure if you are binding that you take several deep breaths during the day and don't bind so tight that prevents normal breathing, no matter how small a problem. Its just no worth the risk in the long term. For now, go to the Dr. and make sure you are ok
sam1234