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.
1 Your first trimester lasts from the very beginning of your pregnancy until you're 13 weeks plus six days pregnant. 2  Along with the excitement of discovering that you're expecting, you may feel exhausted and queasy. 3  Your second trimester lasts from when you're 14 weeks to 27 weeks plus six days pregnant.