Listen to this caller's amazing story about sperm donors

This morning Sarah, Sam and Toni discussed sperm donation and what it involves for hopeful parents-to-be when they received the most amazing call from listener Alison.

Alison revealed why she and her husband decided to use a sperm donor and their story is absolutely heart-wrenching.

Now Alison is searching for the man who helped bring her three children into the world.

Listen Alison's call with Sarah, Sam and Toni above.