Thanks for your querry to HCM
cases usually have a history of contaminated food intake.
Since you are 63, a few other histories are also required for evaluation like
1. whether you have frequent episodes of this illness.
2.history of any chronic illness like diabetes
presents less commonly with vomiting
Hence most probably it is an episode of infective diarrhoea.
Treatment is plenty of water and electrolyte supplements.
The colour consistency and frequency will come to normal in a matter of days.
If facility is available, go for a stool culture as soon as possible to identify any offending pathogen, if at all present.
wishing you a speedy recovery.