There is no exact list of exercises. First you need to get your physician’s permission to exercise. Once you have that, most pregnant women can continue with their regular fitness program. Many sources recommend avoiding the following: getting overheated (especially in first trimester), exercises done while lying on your back (after 20 weeks), vigorous or over stretching, exercises that have high risk of impact or falling after the second trimester. That said many pregnant women continue their regular fitness program without modifications. It really depends on your doctor and how you feel. Generally the bigger you get the harder it is to maintain your pre-pregnant intensity, so most women naturally scale back. If you have not been exercising it would be great to find a program specific to pregnant women. If you can’t find that make sure you easy into everything very slowly.