Unbaptized children used to go to limbo but the Vatican dissolved that heavenly realm a few years ago. So now as I understand it they go to purgatory. It's an interesting question as to whether someone who was never born is guilty of original sin. An aborted baby could theoretically be clean of any worldly sin and they'd get an uncontested free pass into Heaven when the Rapture came.
However since what you aborted was a fetus and not baby, not a conscious creature, Not something that was born and imparted with a soul according to Catholic dogma, it cannot go to heaven or hell. It simply ceases to exist.
Ironically while your aborted fetus cannot go to hell the person who told you it was in Hell is condemned to Hell by all Christian Dogma because one of the few sins that cannot be forgiven through confession is casting God's judgement on another.