By "I made constant trips to and from the hospital during breaks at work." ,did he go between his workplace and the hospital or the lab and the hospital? Are the three places involed here? The translation involves workplace, but I think "at work"'s work is related to laboratory's tests. When I was in Canada, I went to outside labs separated from hospital.
What do you mean by "slump foward"?
ex)I had been in and out of hospitals for blood tests for a week. One morning, I had to be at a laboratory at 7am. From there I made constant trips to and from the hospital during breaks at work. By 6pm, the painful needles made me feel like a pin cushion : my arms were bruised black. I needed a coffee. As I approached the hospital cafe, the waitress smiled at me, asking me for my order. "Just a coffee, please," I replied and then slumped forward....