I would not suspect it would indicate POTS. I would suspect it would go higher and you would have more symptoms like feeling like you may pass out. Like the other poster mentioned, a tilt table test would rule it out. I would not worry too much.
In order to be identified and diagnosed as POTS you would need a tilt table test. You would be in an upright position for about an hour, or until you pass out. I'm under consideration for this, but I think it might be caused by something else.