Hi, Welcome to HealthcareMagic forum. Thyroid problems during pregnancy can affect health of the growing fetus. The health problem can present both during and after pregnancy. Hence it is important that we keep this hormone in the ideal limits for safe and normal pregnancy. Thyroid stimulating hormones (as per recent guidelines) needs to be maintained between 0.5 to 3. Accordingly though the initial values were under limits (suggesting hyperthyroidism) is normal. Your wife needs to continue the medications as suggested by your doctor. If thyroid hormones are normal (with normal TSH values), your child should be alright. As far as scan reports are concerned, vertical lie only mean the axis of fetus (position) is inline with the axis of uterus. This is the most common lie and it means it it normal. Hope this answer has all the information which you looked for. Wishing for safe pregnancy and normal health of both mother and child. Best Regards