Over-correction after PRK Surgery. Should I worry?

I had a PRK surgery on 03/27/15. Previously my right eye was -9 (sph.) and -0.5 (cyl.). My left eye was -5.5 (sph.) and -0.5 (cyl.). Today (05/04/15) I had another eye test: right eye (+1.5 sph., -0.75 cyl), left eye (-1.00 sph., -0.50 cyl.). I am still taking steroids. It may take a while for my vision to stabilise, but I am wondering whether these early results indicate that something may have gone wrong. At the moment, I am happy, although vision from the right eye feels slightly weaker.