The dobutamine stress echo test involves the injection of a medication called dobutamine while you are closely monitored. The medication stimulates your heart in a similar way as exercise. Important: If you have a pacemaker/defibrillator, it must be checked at Cleveland Clinic before your dobutamine stress echo test.
Your Baby During the Second Trimester. The second trimester is normally considered to be from the beginning of the fourth month to the end of the sixth month. This works out in weeks to start from about the thirteenth week of pregnancy.
Each week of the second trimester of pregnancy will bring something new. In week 14, for example, your little one will start practicing sucking and swallowing motions (maybe even sucking that little thumb at this early stage), and facial features like eyes and ears will start to take up their normal positions.