Put ice over the fractured rib. Apply an ice pack, frozen gel pack or bag of peas from the freezer onto your rib injury for about 20 minutes every hour you are awake for the first two days, then reduce it to 10 â 20 minutes three times daily as needed to reduce pain and swelling.
1 Oral progesterone, such as Prometrium, is a natural form of the hormone used to help supplement the luteal phase during fertility treatments such as intrauterine insemination (IUI).  Progesterone suppositories, such as Endometrin and Cyclogest, are made of natural progesterone and are inserted into the vagina.
Only a few of these types are safe to use in pregnancy. Progesterone that is chemically identical to the ânaturalâ progesterone made in the ovaries is safe to use in pregnancy. In fact, two brands, Crinone and Endometrin, are natural progesterones that are approved by the U.S. FDA for use in fertility treatments.rogesterone is made from the ovaries after ovulation. During IVF cycles, progesterone is produced after the hCG trigger injection is taken. Using medications to prevent premature ovulation and performing an egg retrieval may cause the progesterone production to be inadequate.