| Weeks | Typically weeks 1 to 12 of pregnancy. |
| Development | – Fertilization of the egg by sperm. |
| – Formation of the zygote, which then divides into a blastocyst. |
| – Implantation of the blastocyst into the uterine wall. |
| – Development of major organs and body structures, including the brain, spinal cord, heart, and limbs. |
| Symptoms | – Missed period |
| – Nausea and vomiting (morning sickness) |
| – Breast tenderness and enlargement |
| – Fatigue |
| – Frequent urination |
| – Food cravings and aversions |
| – Mood swings |
| – Heightened sense of smell |
| – Constipation |
| Medical Tests & Care | – Confirmation of pregnancy through urine or blood tests (HCG levels) |
| – First prenatal visit, including medical history, physical exam, and ultrasound |
| – Screening for genetic disorders and infections (optional) |
| – Taking prenatal vitamins containing folic acid |
| – Avoiding harmful substances like alcohol, tobacco, and certain medications |
| – Discussing any concerns or questions with healthcare provider |
| Lifestyle Changes | – Eating a balanced diet rich in fruits, vegetables, whole grains, and lean proteins |
| – Drinking plenty of water |
| – Getting regular exercise, if approved by healthcare provider |
| – Getting enough rest and sleep |
| – Avoiding strenuous activities and heavy lifting |
| – Managing stress through relaxation techniques |
| – Avoiding exposure to harmful chemicals and radiation |
| Complications | – Miscarriage (risk is highest during the first trimester) |
| – Ectopic pregnancy (when the fertilized egg implants outside the uterus) |
| – Hyperemesis gravidarum (severe nausea and vomiting) |
| – Gestational diabetes (diabetes that develops during pregnancy) |
| – Hypertension disorders such as preeclampsia |