"She's in Vancouver shooting a movie, and I have Laker seats on the floor, and I'm gonna go to the Lakers game with my friend Jesse James," E!online quoted Rock, as saying.
"I'm like, 'Baby, I got these tickets. I'll see you on the weekend there,' and that leads into her saying, 'You don't care about me, blah, blah, blah!
"She finally comes up with this: 'I just had a miscarriage'...and hangs the phone up," he added.
Rock revealed that he was not aware that Anderson was expecting and when she told him about her miscarriage, he immediately chartered a plane to Vancouver to be there for his then wife.
But when he arrived, he saw that his former wife was in far better spirits than he expected.
"When I get there, she's partying at this restaurant, drinking champagne, jumping on the tables. I'm thinking, That's a quick recovery from a miscarriage," Rock said.
However, Anderson's representative issued a statement last year in November confirming that she had a miscarriage and requested that "everyone respect her privacy during this difficult time."
In response to Rock's allegations, Anderson told him that she hopes that he stays happy and if he can't say good things about her then he shouldn't discuss her.
"I hope his album does well. I hope he's happy in life. We were married for four months. If he has nothing nice to say about me, then please tell him to stop talking about me." Anderson said.