Are loose stools a sign of pregnancy?

Constipation is : Probably more common early on. Early pregnancy sxs can include: lack of period, breast swelling ; tenderness with darkened areolas, fatigue, increased urination frequency, constipation, bloating, heartburn, backache, cramping, headache, food cravings or aversions, increased sense of smell, enlarged waist, feeling faint/dizzy, mood swings, increased gas, insomnia, gagging more easily ; yawning.