"The only tablet recommend when a woman is pregnant is folic acid. Apart from this no other tablet is require and the first trimester, unless and until you have a heath related issue like hyperthyroidism, diabetes. Hypertension or heart diseases, you need not take any other tablet other than folic acid. folic acid plays a major role in giving birth to a healthy baby, preventing the incidence of neural tube defects in the newborn and also reducing the incidence of Down’s syndrome and the most important part here is in case you have a preexisting diabetes conditions, the tablets you were taking before the pregnancy may not be continued when you become pregnant. The ideal medicine would be insulin other than the other oral hypoglycemic drugs. The thyroids medicines dosage needs to be varied once you become pregnant because it needs to support both the pother and the newborn. The hear related issue or condition they require eat blood thinning to ensure adequate blood supply to the newborn and additional hypertension medicines well before you were pregnant will be helpful when you are pregnant. It needs to be changed into a safer medicine once you have conceived. So it is always severe to discuss with your doctor once you have conceived. It is always better to discuss with your doctor before you plan for pregnancy if you have any health related issue or miss your periods and confirm that you are pregnant you an discuss on what tablets to be taken and what not to be taken. The next important thing is does frequent scans in pregnancy harm the fetus? Definitely not frequent scans cannot harm the fetus because ultrasound are low sonic low intensity and low frequency waves which are not at all harmful for the fetus. So repeated scanning will not harm the fetus. Infact repeated scanning helps us and guides us to diagnose any diseases at the earliest. The recommend number of scans in pregnancy is to the earliest at 6 weeks where we scan for the fetal heart rate or come for everything is going on at the correct rate. The third month can or the NT scan or the nuchal translucency scan where it is also called as the first anomaly scan where we scan for the Down’s syndrome. The third is the anomaly scan where a detailed study is done on all the parts of the fetus, roughly about 20 to 24 weeks to find any abnormalities in the fetus and if the pregnancy can be continued and the the fourth is optional, where it is done in congenital heart disease mothers or highly diabetic patients who are pregnant. In them we do this and the Fetal Doppler scan where we do cardiac evaluation of the fetus and see if there are nay congenital heart related issues in a diabetic or a congenital heart disease mother and the fifth scan is the Internal Growth Scan done between 28 to 32 weeks to see if the fetus is growing adequately in terms of height, weight, abdominal surface and the last but not the least done at 36 weeks, to see if the fetus has attained maturity, in case here is nay plan t go for any preterm delivery or I case we have to plan for a cesarean. In certain conditions where the mother is not a normal candidate for a normal delivery. The recommend number of scans is 4. The first trimester scan, the NTNTD Scan. Anomaly Scan and the 36 weeks scan which is the growth profile scan. To see if the fetus has attained maturity and if it is ready to come out, are the ideal scans"