Thanks for your question on Healthcare Magic.
I can understand your concern.
Since your resting
heart rate is 40-50 beats /minute, possibility of
heart block is more.
Normal heart rate is 70-90 beats /minute.
But when there is problem in conduction of heart, there is delay in impulse transmission and hence, heart rate is low.
This is low heart rate will cause less blood ejection infection
systemic circulation.
And this can will inturn cause giddiness,
dizziness, breathlessness etc.
So better to
consult cardiologist and get done clinical examination, blood pressure monitoring, ecg, 2d echo and Holter monitoring (24 hours continuous recording of ecg) for the diagnosis of heart block.
If you it is confirmed heart block then you will need pacemaker insertion.
Don't worry, you will be alright. But first diagnose yourself and then start appropriate treatment.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.