Is cramping on one side a sign of pregnancy?

Unilateral cramping : Is not a specific sx of pregnancy. 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.