This is good that you don't have any problem or issue but you should consult with your gynecologist for this because gynecologist will appoint an instructor and the instructor will guide you much better according to your pregnancy which exercises are good for you. You can do some simple yoga like take deep breathing, do household chores by your own which makes you not tiering and do walk, walk is the best exercise in pregnancy rest the instructor will guide you much better in this:) take care.