Second Trimester During this trimester, the weight of your growing baby will multiply more than seven times—and you will start showing more. Second Trimester Prenatal Screening Tests Screening is usually performed by taking a sample of the mother's blood between the 15th and 20th weeks of pregnancy (16th to 18th is ideal). We're Pregnant–Tips for the Expectant Dad More than ever, men are actively involved throughout the pregnancy experience. The term expectant father really fits, as men support, worry, and plan right along with their pregnant partners. Some of the more common experiences for expectant dads are included here. Tips for Traveling Moms-to-be Today’s society is increasingly mobile, and the demands of career and family often require travel during a woman’s pregnancy. Here are some tips and guidance for safe travels while you’re pregnant. Pregnancy and Skin Changes For many women, pregnancy brings glowing skin, rosy cheeks, and shiny hair. But others can experience skin changes that aren’t so attractive, including acne, dark spots, and stretch marks.