text: should i be concerned if i have not had cycle since feb. '06?   yes, you have what is called amenorrhea.  amenorrhea can be caused by many different things and only your doctor can tell for sure.  amenorrhea can be caused by polycystic ovarian disease, obesity, hyperadrenalism, hyperpituitarism, hyperandrogenism, tumors, etc.  please see a doctor.  the doctor will most likely test your hormones including: prolactin, thyroid hormones, lh and fsh first.  perhaps testosterone, dht and cortisol would be useful.