During your first trimester, there’s a higher risk of miscarriage associated with traveling and during your third, you’ll want to be close to home with your doctor or midwife. If you intend to travel, do so during your second trimester.
Make sure you stay hydrated and stress free as you travel, and walk around as much as possible to avoid blood clots when traveling by plane. Winter activities, including ice skating and skiing, can be fun on vacation but do pose a risk to you and your baby including premature labor and fetal injury if you fall after 20 weeks. Try cross-country skiing or snowshoeing instead.