Precaution During Pregnancy In First 3 Months? Extra care must be taken throughout the first trimester, or the first three months of pregnancy, to safeguard the mother’s and the developing child’s health and welfare. Keep in mind these crucial safety measures at this crucial period: pregnancy. Medical Operations: As soon as you suspect pregnancy, schedule a visit with a midwife or obstetrician. To find out if you are pregnant, you can also use a home pregnancy test.