HI Well come to HCM I really appreciate your concern, I actually advise my all patients those are carrying pregnancy that try to avoid the medicine as long as it is possible, because pregnancy is not the disease that can be managed with medicine but it is the physiology and natures phenomenon Medicine can only be given where the pregnancy and life of baby and mother matters the great, if this is the pregnancy induced illness like hypertension, diabetes and others. Susten tablet contains the progesterone hormone, unless know the level of progestin in system of pregnant women it needs to be avoided, it can only be given where the progestin level is disturbs and maintaining pregnancy is matter of concern, but it is the rare condition seen. It is patients basic right to know the detail of line of treatment, so you can discuss this with your doctor, because what the clinical information given here is too brief, and from this difficult to say anything, perhaps gynecologist knows every thing about the clinical condition because patient must have been examined by gynecologist, patient must have been given all the detail and so given the hormone tablet, hope this information helps.