['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.', 'Aw, that stinks. What was wrong? Were you sick?', '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!']
Wow! That's insane! I'm sorry that you had that experience! Hopefully you didn't miss too many days of work.
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.