ngela Magdalena gave birth to triplets three years ago, with the help of fertility drugs. Last week she had week, she had quadruplets - without fertility drugs.

Her two boys and two girls were healthy and doing well after being born by Cesarean section in what doctors are calling a rare occurrence of multiple births.

Magdaleno, 40, said she was shocked when her doctor told her she was pregnant with four babies.

"I didn't know what to do," she said in Spanish as she rested at home. "But now I'm happy because they're healthy and so am I."

Worried about future and work pressure, Angela has still not been able to come to terms with the event."I don't know if I'm sad or happy," she said. "I'm happy but, I don't know. I don't know how to explain it."

The two girls were larger than the boys. They weighed 4 pounds at birth and were 17 and 17.5 inches long. The boys weighed about 3.5 pounds and were 16 inches long.

The odds of conceiving quadruplets without fertility drugs are about one in 800,000. Even more rare, the boys appear to be identical twins, according to their doctor, Soha Idriss, who expects the babies will join their mother at home in about eight weeks.

Three years ago, Magdaleno gave birth to her triplets after undergoing in vitro fertilization. She said her husband wanted many children.

All 11 family members will be living in a one-bedroom apartment in East Los Angeles. Magdaleno said the living room is large and the babies are small, but she isn't sure what the family will do when they get bigger.

In the hospital, the babies sleep wrapped in blankets and attached to monitors and wires in separate incubators. They have full heads of straight dark hair and plump pink mouths.