I am struggling at work as I'm contracted to work until 7pm. I have asked if I can start and finish earlier so I could be done by 5 or 6 but they have said it doesn't fit in with the buisiness. I find I have energy in the morning but by 3 I'm struggling to stay awake. I feel unwell driving home and then have no energy to make dinner. I have another chronic condition which causes fatigue so the pregnancy is making it worse. Can my employers refuse to help me as I thought I could request a change in hours during pregnancy.