It is always better to take progesterone
injections if there is a history of spontaneous preterm delivery in the past. Progesterone is also available as gel but injections are preferred. They are not advised in case of multiple pregnancy
or if there are other reasons for preterm labor
. There are no reported side effects on the mother or the baby apart from slight pain at the site of injection. Also, this treatment is reported to be very successful in singleton pregnancies with previous spontaneous preterm labor. Further information and suggestions can be had from your doctor. Take care.