Susten is a natural progesterone
and does support healthy conception and pregnancy
Progesterone plays a major role during the two weeks after ovulation because it supports embryo implantation
. When the egg is released during ovulation, progesterone is secreted by the follicle that used to contain the mature egg.
This follicle now becomes the corpus luteum
and produces progesterone for the next 14 days of the menstrual cycle. This part of the menstrual cycle is called the luteal phase and it should last for 14 days. During this time the lining receives the fertilized embryo.
By supplementing with progesterone, it is possible to support pregnancy and prevent miscarriage
by supporting the luteal phase of the menstrual cycle.
Your pain abdomen doesn't seem to be due to susten and it could be due to impending periods.
However,Just wait and watch and pray to the god that pregnancy,if there,gets sustained.
Even if you happen to fail this time,there is nothing o get disheartened as you will get plenty of opportunities in future.