Hi,
Welcome to the ehealthforum and I am really glad to help you out. The shingles shot is available under the brand name of zostavax and is currently approved for use for those who are above 60 years of age. A history of stroke is not a contraindication of giving the vaccine and thus the vaccine can be safely used.
I would suggest avoiding carrying any weight until the complete power has returned on the affected side. Even if the power has completely returned, then the amount of weight to be carried should not be more than a few pounds (10-15).
If the mentioned headache is associated with any nausea or vomiting or if it interferes with sleep or there are any associated visual symptoms like blurring or double vision, etc, then it needs to be further evaluated. I sincerely hope that helps. Take care.