Welcome to HealingWell.
Stay on top of it. You've already read enough to know that 0.34 is not the best result. But you also know it is early. Test again at 6 weeks and 10-11 weeks to see if there is a trend difference.
There are studies that show it is best to have follow up radiation or other treatments within 18 weeks of surgery. You might want to start lining things up.
You'll feel more in control when you have a plan. In the meantime take care of the things within your control. Eat right, exercise, and do those kegels!