Tachycardia and pregnancy

Ra

Hey all! I just found out that I’m pregnant today after 8 years of trying! The only thing that has changed is that I found out that I have sinus tachycardia and have gone on beta blockers to reduce my natural heart rate. I feel worlds better but am concerned about exercise and tachycardia/ beta blockers. Does anyone have any experience with this? I’m calling my docs on Monday.