Just for the record, there is really a BIG difference between Western astrology and Vedic ... although the two have common roots, they have diverged over the centuries. Both ani and Auriel are correct about your ascendant, each using their respective systems. You are Scorpio rising in Vedic and Sagittarius rising in Western. However, in Vedic astrology, your Sun sign is not Pisces, but Aquarius (as ani identified)! So it sounds like you are mixing placements from the two different systems, which will not make sense.
Vedic astrology uses the physical constellations as the basis for the Zodiac, while Western astrology uses the Vernal equinox as the "starting point" for the sign of Aries. Over 2,000 years ago, these two systems coincided, but due to the "precession of the equinoxes" caused by wobble in the Earth's rotation, they are now approximately a full sign different, depending on where you draw the "ayanamsha" (the difference between the tropical and sidereal zodiacs ... which is uncertain itself, because unlike the vernal equinox that can be measured exactly, there is no measurable "line" between constellations where you can say definitely that one ends and the next one begins!)
Both systems have value, but they have different calculations, methods, and purposes, and they CANNOT be mixed meaningfully. Western astrology is more psychologically oriented, and focuses on understanding personality, potentials, and times when certain activities or departments of life will be easier or more difficult ... it aims to provide an understanding of the forces that act on you, with an eye to adjusting yoursef to the circumstances and making the most of whatever influences are affecting you. Vedic astrology, on the other hand, focuses more on prediction of specific events, and emphasizes destiny over free will.
As a result, both the planetary placements AND the way in which the placements are interpreted by the two systems are quite different!
Hope this confusing information somehow makes things less confusing.

Love,
Greg