You may think that people should know you need help, and offer it. The truth is that we often work so hard to get everything done and to make everything look easy, that to other people it does not appear that we need help. We hide our stress and keep going. That is not necessarily a good thing. It perpetuates the feeling that one person can do everything, and be perfect while doing it. The reality is that we all need help sometimes, and no one is perfect. Ask for the help you need.