Last week I was not feeling well at all. I was so tired when I Went back to work, that I forgot to change out of my pajamas before I went in.
Last week I was not feeling well at all. I missed a couple days of work and was so tired by the time I went back in.
user
Aw, that stinks. What was wrong? Were you sick?
assistant
I had the flu. The day I went back to work, I was so tired that I forgot to change out of my pajamas before going in!
user
Wow! That's insane! I'm sorry that you had that experience! Hopefully you didn't miss too many days of work. 
assistant