hugs hun how scary
perhaps time for DF to have a full medical
the first thing i thought of was his blood sugars- perhaps that may be an issue
something is off balance somewhere- his salts, a infection (get his teeth checked as well) it has to be something- the body is sending out too many signals that something is not quite right!
i am not medically trained so dont take my advice as such- but i would be pushing as much as i can to get as many tests you can get done!!!!
hugs hun!
btw i love you saying below you name- in fact DH and i wear matching rings that have these words engraved into them- i will show you when i see you next meet up!