I have poor sickness rating due to having 6 weeks off after a family tragedy. Now if I take 1 day it automatically triggers a meeting. I am recovering from a cold, still headaches, weakness, tired but on the mend. Im due in work tomorrow (I works weds and Fridays) I was asked a few weeks ago to cover this Thursday. Meaning this week I should work weds, thurs, Friday. I really don't want to work Thursday as I think it will be too much. But I don't want to phone in sick for my normal days. Is it unreasonable to say I will come in my normal days but cancel Thursday?