newbie,

Trying to look back is counter productive. This has been hashed over by others. Your short rest was good. Your arguing at work was likely no worse than spending a week or two tied up in anxiety at home. The temporary increase in headache likely slowed you down a bit.

It would have been better for you to avoid those situations that caused an increase in your headaches but you did the best you knew based on the doctors' advice. Taking the rest of the week off is good, especially if you keep a low stress profile. After that, you should still moderate your days to minimize stress. As I mentioned, getting your employer and co-workers to help you will be good.

There is one piece of research that suggest a week or two of minimizing stress is best but there is no consensus on what the best rest is beyond what I have already stated.

Did you watch the "You Look Great" You Tube series and read the Vitamins sticky ?

If you avoid stressful situations and get good rest each night, you have great chances at a good recovery. 85% recover within the first 6 weeks without any special treatments or efforts.