¿Bradicardia??? Ayuda por favor

I am 44 year old female. Not an athlete. Ive recently noticed my heart rate is dipping into the 50s while lying down. I weigh 118lbs. I get moderate amounts of exercise. Walking cleaning ect. Im wo dering if this is normal or something i should be concerned about. No shortness of breath or feeling weak. Just really anxiouse about this now.

49 year old male, my resting is low 50’s at times too. Had multiple tests done. All normal