I'm sorry for your mom and all of you in the family... BUT, from what I've read, you must be a great daughter! You obviously care for her! As a mother (and lung cancer survivor) I, personally, would want you to focus on your own family and pregnancy first. There are many ways you can let your mom know you are thinking of her and caring for her... Cards, emails, phone calls will mean a lot to her I'm sure. After the baby is born you can hopefully have more time to spend with her. As a mom, I would want you to take care of you first... I wouldn't want to be abandoned by you, but I would completely understand! Wishing the best for all of you in this journey...!