Seriously, if a woman has an abortion she is a slut unless her pregnancy was the result of rape or incest?  What do you say to a woman choosing between saving her life because the fetus she is carrying can cause her death if she continues with the pregnancy?  Calling her a slut doesn't come to my mind.  

Abortion is legal and no one has the right to determine whether a woman has a legal abortion but the pregnant woman.  Her doctor can consult with her before she goes through the procedure, but no one, including the father has a right to interfere and stop it.  Until men can give birth, they don't have a right to enforce any pregnancy on any woman for any reason.