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.
