Can working too hard make you sick?

I spent about 5 hours yesterday, and 5 hours today raking and cleaning our big back yard. Working the perimeter meant spending time on my hands and knees getting to leaves my rake couldn’t get. I also was filling a trash can with the leaves and hauling it over the the place I’ve set aside for composting. I’ve probably hauled 30 cans full.
I was also hauling bricks and just…stuff.
I quit for the day about an hour ago. My back is killing me, but I expected that. However, a minute ago I realized I was really hungry, so I got some left over chicken fried rice that my husband made last night. I ate about half of it….and now I just feel sick.
Please tell me it’s normal and temporary, because I start my new job tomorrow…...