Just because you're pregnant doesn't mean your sex life is going to take a nosedive and be relegated to cold storage for nine months! In fact, sex at this time can be great fun, since you don't have to worry about birth control anymore! So throw away the rubber. You won't need them for another nine months. However, there are certain things you need to consider.
1. If the woman is in the category of 'high risk pregnancies', then it is better to stick to standard sexual positions. Leave fantasy out of the bedroom for a while, or consult your physician to find out what positions are safe in your particular case.