Hi Ms. Sara, If the cause of your previous miscarriage is not a recurrent one, you have every chance of a healthy pregnancy this time. The hormones that your doctor has prescribed are as a precaution to counter possible hormonal imbalances. Fetal pole is usually detected after four weeks and a repeat sonogram, preferably trans-vaginal, after another week should be able to detect everything. Please follow your doctor s instructions, avoid all forms of stress including intercourse and especially anxiety, as maternal anxiety has adverse effects on the baby s health. Wish you good health.