Period twice in a month bright red/pink blood light than heavy than light goes back and fourth. Creamy white discharge/little pink, sign of pregnancy?

Not necessarily. You may or may not be pregnant. It's best to consult your gynecologist obstetrician as soon as possible and I would check a home urine pregnancy test to be reassure.
Not really. The only truly reliable sign of early pregnancy is a positive pregnancy test. Irregular bleeding can come from lots of different reasons.