Generally, within a few days of pregnancy, women will feel first pregnancy reactions. In the early stages of pregnancy, women usually start to experience first pregnancy reactions within 6-12 days after conception. Not every woman will experience first pregnancy reactions, but most women will experience this process. The degree of first-pregnancy symptoms varies from woman to woman, with some experiencing only mild discomfort, while others experience severe discomfort. The most common symptoms of first pregnancy are nausea, vomiting, fatigue and headache. Other common symptoms of first pregnancy include breast swelling and pain, dizziness, constipation and diarrhea, mood swings, dry mouth, frequent urination, and more. Precautions