S1E2 · The One With the Sonogram at the End

Complete story — includes the ending

Carol ( Anita Barone ) tells Ross that she is pregnant with his child. When Ross attends the sonogram appointment, he is stunned to learn that Carol and her partner, Susan ( Jessica Hecht ), want to give the baby their last names, but not his. Rachel returns her engagement ring to Barry ( Mitchell Whitfield ), expecting him to be heartbroken, but learns he went on their cancelled honeymoon with her maid-of-honor, Mindy. Monica stresses over her and Ross' parents ( Christina Pickles and Elliott Gould ) coming for dinner, knowing her mother will fawn over Ross while criticizing her.
Guest starring: Christina Pickles as Judy Geller, Anita Barone as Carol, Jessica Hecht as Susan, Mitchell Whitfield as Barry, and Elliott Gould as Jack Geller. Note: This is Anita Barone 's only appearance as Carol. Jane Sibbett appears as Carol in all following appearances.