List of week 1 early pregnancy symptoms include: nausea with or without vomiting breast changes including swelling, tenderness, or tingling feeling, or noticeable blue veins frequent urination headache raised basal body temperature bloating in the belly or gas mild pelvic cramping or discomfort without bleeding tiredness or fatigue irritability or mood swings food cravings or aversions a heightened sense of smell metallic taste in the mouth But not all of these symptoms are unique to pregnancy. Also, remember that early pregnancy does not always cause noticeable symptoms. for more information visit: https://nutritionjewel.com/pregnancy-symptoms-week-1-early-signs/