So I didn't return to work today. I called up and offered to work from home instead, as I wasn't well enough to return. My normally accommodating line manager was dictatorial in his response that if I was well enough to work I should come in to work. He further added that he didn't know who was and who wasn't allowed to work from home. I said that I wasn't well enough to come in to work, so he asked if I was going to take another day sick, to which I replied yes.
I doubt it was his intention, and I know Monday mornings are usually busy, but I dislike being made to feel extra guilt for my inability to work at the moment due to my illness.