If I got a steroid shot in my spine would that affect Botox results if they were done a week or so apart?

An epidural steriod injection performed a week or so apart from Botox treatments will not alter your results. 

No, your steroid injection to the spine won't negatively impact the results of your Botox treatment. Keep in mind, it will take 1-2 weeks for final results with Botox. See an expert. Best, Dr. Emer