what is pro gay and pro choice?

You are right on the first one. Yes, pro gay means that you support gay marriage. Pro choice doesn't necessarily mean you support abortion, but you believe people should have the right to choose for themselves as to whether they want one if they believe in it, or don't get one if they don't believe in it, rather than it being banned completely and no one gets to choose either way.

"Pro-choice" means you believe that abortion should be legal and accessible- in other words, you believe that women have the right to choose whether or not they ought get an abortion. "Pro-choice" does not mean you necessarily condone abortion, or believe it is moral, although many pro-choicers do feel that way.

And yes, "pro-gay" means you are in favor of gay rights.

t=yh prety much pro gay is when someone is happy for gays and it dont bother you hen u se thm kissin etc pro choice is when you belive abortion is up to he mother and dont anrt a ban