Hi,
Siphene is primarily used to treat 
female infertility. It works by stimulating an increase in the amount of hormones that support the growth and release of a mature egg (ovulation).
Its common side effects include 
stomach upset, bloating, abdominal / pelvic fullness, flushing, breast tenderness, and headache. Susten is a form of female hormone 
progesterone commonly prescribed to regularize the menstrual periods, support and maintain an early 
pregnancy.
Generally it is well tolerated however it may cause headache, breast tenderness, and 
abdominal pain. Continue to take them as prescribed.
Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Mohammed Taher Ali, General & Family Physician