Yes, taking Supracal (calcium and vitamin D3) is generally very safe and highly recommended during your 14th week of pregnancy. Calcium is essential for your baby?s growing bones and your own health. When taken as prescribed, it does not cause any harmful side effects for you or your baby. Some women may experience mild, harmless side effects like mild constipation or bloating. Drinking plenty of water and eating fiber-rich foods can help ease this. Please share all your supplement choices with your obstetrician to keep your pregnancy journey safe and supported.