When you are fighting pain, it is tempting to just give up and lay in bed all day. However, that will make things worse in the long run. It is important to keep doing as many of your daily tasks as possible, even if you need to do them a bit differently. Take frequent breaks. Reorganize your day to include periods of rest, and rest in comfortable positions that take the strain off your body. While you are resting, use ice or heat to soothe sore areas. Pay attention to your posture and your body alignment while you move. Using healthy alignment and standing and sitting up straight can help you get things done with less pain.
If you can't manage to continue doing certain things, talk to your doctor, physical therapist, or occupational therapist. They can give you suggestions about special ways or devices that can help you accomplish your tasks, and the information you give them will help them tailor an exercise or rehabilitation program that can better meet your goals.