Am Pretty Healthy 68 Year Old Woman, Though Under Lots

Am pretty healthy 68 year old woman, though under lots of stress right now. I was just doing some water aerobics with noodle and out of no where I had strange cramps in my left foot. This went away and then it started in the right foot. It's gone now. I'd like to know if this is some kind of alert that I should not ignore.
Thanks. Barb