SQUATTING in an inflatable pool in the open kitchen of her apartment in Astoria, Queens, a very pregnant Alecia White Scharback, nude except for a bathing suit top, groaned in pain. It was 7:30 a.m. on Nov. 1, and Mrs. Scharback, 29, an actress, had been in labor for more than 36 hours. The contractions had been only mildly painful at first, but had grown increasingly fierce as a second night gave way to morning.

At the height of one contraction, Mrs. Scharback closed her eyes, bent forward and rocked her hips back and forth. “It hurts, it hurts, it hurts,” she moaned. Using a stainless steel refrigerator to steady herself, she vomited. Joshua Scharback, her husband, rushed to her side and gently stroked her head.

Mrs. Scharback was giving birth at home because she did not want any medical interventions in the process unless she needed them, she said. But after another four hours, she was beginning to doubt whether she could make it and was pleading with her midwife, Miriam Schwarzschild, for relief. “Oh, Miriam,” she whimpered, “I can’t.” Ms. Schwarzschild reassured her client: “You can. And whenever you’re ready, you can start to push.”