If your heart's rhythm was regular when it's rate was was 49, that's called sinus bradycardia, and it's normal, just a little slower than usual. If you had no dizziness or faint feeling, you're fine.
Worst case scenario, but 49 is not that serious, however, if the heart dropped beats when its rate was 49, that might be heart block (block of impulses from atria down to the ventricles whose pumping makes the pulse). In that case you may or may not need a pacemaker...the sinus node (natural pacemaker dysfunction) problem. If considered serious, an EKG test may be appropriate.