My husband was diagnosed with cancer a couple of months ago and it is very scary at first but then starts to make more sense and develops a pattern of care, etc. You should still be able to work okay, though you might get tired and have some days when you can't. Maybe your boyfriend can work at home with you those days? My husband and I are retired so I can be with him whenever we want and it is very comforting for both of us going through this together.