Yep, you all were right, it’s on the sensor. The easiest way to tell was to point the camera at my light box, and when I moved the lightbox, the dots stayed still. Moved the camera, the dots moved. Same thing on 2 lenses.
I did clean the sensor with a cleaning kit but it didn’t really have any affect. Is it possible that it’s something other than dust? (I’m pretty sure the actual dust in the photo is on the light table?).
Perhaps I need to take it to a professional at this point?
Appreciate all the advice!