So are the dots in the photo showing up on the actual negatives or just in your scans? If they are in the actual negatives, I would suggest you clean the inside of camera. You should also probably take a look at the lens you used. It looks like dust has gotten on the film at some sometime in the process or it may be on the lens and thus in the negative. Or it could simply have collected on the film while it was drying.
I scan all of my negatives for archival reasons as well as for web use. The dust that I see in my scans does not show up when I go to the darkroom to actually print them. It is almost always dust on the scanner.