Shortly after getting hit with the ray you feel a burning sensation go through your body. When it stops you feel a great bit different. You feel slightly shorter and slimmer, your skin feels as if it is missing hair, but where it feels like it is missing on the body it was replaced on your head. When you move your head about, your hair brushes against your shoulders and cheeks.
After looking down you notice that your hips are wider. Your chest also has been enlarged to stick out to about a B cup length.
Your hands shoot down to your crotch and sure enough your penis is missing and so are your testicles. Replaced by what you assume is your new vagina.
You feel your face and your cheeks feel smoother. Your nose feels smaller and your lips feel fuller. Your eye brows feel thinner and your eye lashes feel longer when they bat together when you blink.
However your clothes still remain unchanged.