To answer any queries on my slightly of topic contribution.
I used back up meter to confirm readings, batteries were not low, am not sickening for anything and though I have changed my diet marginally have not done any thing drastic so I still cannot understand what happened.
Thank you to all those who showed concern on my behalf.
With some of the posts on here I thought I would have a little look around for stuff on WFPB, and stumbled across this.
"Dieters sometimes consume extra protein to stave off hunger and prevent loss of muscle tissue that often comes with weight loss. But in a study of 34 postmenopausal women with obesity, researchers found that eating too much protein eliminates an important health benefit of weight loss: improvement in insulin sensitivity, which is critical to lowering diabetes risk."
I know it primarily concerns posmenopausal women but thought it may be of general interest as well.
https://www.sciencedaily.com/releases/2016/10/161011130002.htm