can dogs sense when something’s wrong with human like illness?

my dogs have recently been whining at me a lot, and i wonder if they can sense how i havent had an appetite/havent really ate in 2 weeks, nor felt thisrty, or tired. When I do sleep I sleep for 12 hours. I don’t know if there’s anything wrong with me because I can’t drive. My dogs have recently been more affectionate and whine a lot to me even when they don’t need to go outside/arent thirsty. they look sad and idk what to do to help them. it maybe also could be my dogs age? i’m unsure i need the dog experts help!