You can shield her face from the cold with a blanket when you're outside. Most mothers need some help when they bring a new baby home. If Dad can take a few days off from work during the first week or two, the problem is usually solved. If he cannot, and the family finances won't allow you to hire help, the next best choice is a close relative or friend. It is wise to make these arrangements in advance rather than waiting until after the delivery to seek help.
Some areas have a visiting nurse or homemaking service.
These arrangements, too, should be made in advance. Be selective about the help you seek. Look for assistance from those who will really support you. Don't forget, the goal is to reduce the stress level in you home, not add to it. Before you start interviewing or asking friends or family for assistance, decide exactly what kind of help will work best for you.