I've been at work since 645 this morning I've barely sat down until now I literally hurt every where…

I've been at work since 645 this morning I've barely sat down until now I literally hurt every where I feel like my muscles are worn out only 20 wks and 3 days. I'm just so tired and exhausted haven't really done anything except clean counters and held a dog for the vet. I keep getting shortness of breath as well