I have worked in alternative health for many years and I am thinking it could be a detox as the body is healing. I haven’t found any research about this yet.

@summertime4 First, my condolences again for the loss of your husband. We know there are triggers after the passing of a loved one: certain dates, or smells, or events, people we meet, etc. I agree with you it may be a combination of so many things, and the fibro flare might be the root cause. That often happens to me, and if the CBD oil is taken too early in the day I don't get the benefits of more restful sleep. Sleep disruptions due to sudden body temperature spikes or muscle cramping, have plagued me for decades. Hope this helps you, hope you get support here.
Ginger

Seems to be some people perhaps have a long lost memory of marijuana/cannabis as being illegal and causing all sorts of issues during the early days of the drug wars. I know this is the case in my community where many older seniors reside and they still fight the marijuana war. For example, our community of 125 houses is near a light industrial area. Within a mile, was a warehouse that applied to be a pot distribution center. One of the more aggressive and vocal seniors and board members of the hoa association spread a petition stopping this new business to form near us. And it was stopped. Of course, it just went to the other side of the city. (Nevada). They say new ideas succeed as the older folks die off. Might be some truth there.