If you had d-transposition, requiring an arterial switch procedure then things may be fine.
1. A low resting hr is normal in someone who does cardiovascularly demanding athletics.
However, if your hr can't increase enough, this could be "sinus node dysfunction"
2. Your diastolic BP reading is low (49 and 37)
yet not necessarily concerning if taken by a machine. I'd have a rn re-check your bp.