I think you should be seen again. Your symptoms are unusual, certainly, for someone who has just come off of a resolving viral illness. Most viral "stomach flus" (like it sounds like you had) are handled by the immune system without any additional symptoms.
Your symptoms, and the fact that you are diabetic (this means that your immune system isn't generally as strong as most people's without diabetes), make me concerned that this might be something more involved. Certain bugs can lead to joint infection and arthritis, and your symptoms are concerning for this. If an illness like this progresses to involve the joints, it requires more aggressive treatment because the body is not terribly efficient at eradicating infections within the joints by itself. Antibiotics might very well be in order, and certainly you need a good exam, workup, and testing.
So call your physician that you saw, tell them about your shoulder pain and joint pain and inflammation now, and that you want to be seen today. The faster someone sees you, the faster antibiotics can be started, for if the infection is in the joint(s) then this is an urgent situation.
I hope this helps. Please let me know if you have any further questions - I'm more than happy to help. Take care - Dr. Fay
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