Feeling nauseous and light spotting in women are sure signs of pregnancy?

Not sure signs. : Early pregnancy sxs can include: no period, breast swelling ; tenderness w darkened areolas, thin, white ; milky vaginal discharge, fatigue, ^ urination frequency, constipation, bloating, heartburn, backache, cramping, headache, food cravings or aversions, ^ sense of smell, enlarged waist, feeling faint/dizzy, mood swings, ^ gas, insomnia, gagging more easily ; yawning. Take pregnancy test if late.