Welcome to HCM and thank you for expressing your concerns to us. I m sorry to hear about your miscarriage. Truly, it s a distressing situation when you lose a baby that you were hoping that you will have. The subchorionic changes, subchorionic haemorrhages, etc are all related to the abnormalities associated with miscarriage. They suggest that the miscarriage took place because the placenta (the special organ that connects the baby to the mother) had abruptly and prematurely detached from the uterus, i.e. womb. As a result, the growing baby was deprived of nutrition and oxygen and died. The other finding, and in fact the more significant one, is the complex cyst . It is quite a point of concern that the cyst is complex in nature, and also a point of concern that it is increasing in size. However, often, cysts less than 5 cm in size are not much of a threat, although they cannot be ignored completely either. Do you have any problems with menstruation, eg increased amount of bleeding, prolonged duration, or pain during menstruation? Whether or not you already have these problems, my suggestion to you would be to consult a gynaecologist and follow her advice. I think what you will be asked to do is have another ultrasound perhaps about 6 months later in order to determine how the cyst changes -- whether it enlarges, remains the same or becomes small. You may also be asked to have your blood tested for hormone levels. If the cyst remains as it is and does not cause you any physical / hormonal problems, you can continue life as before with only periodic checks on the cyst. However, if it enlarges or creates problems, various patterns of treatment are available to restore you to normal life. Overall, awareness, promptness and openness with your doctor are the keys to alleviating any worries that you may be having. Wish you all the best.