Several studies have shown that this rise in progesterone is associated with a lower pregnancy rate after fresh embryo transfer. (sciencedaily.com)
Fresh embryo transfers require your cycle and the intended mother or donor's cycle to sync up, which usually requires the use of birth control and hormones. (surrogateparenting.com)
Women were given one cycle of IVF, where either a transfer of fresh embryos occurred, or all embryos were frozen and one cycle of thawed embryos occurred subsequently without the use of IVF drugs. (sciencedaily.com)