Hi Sher... Welcome to Anxiety Zone! My name is Chuck, and I am one of the Global Moderators here on the site
You are now a member of our community, where you will find support and advice from other members in similar situations. It's always nice to find someone else who understands, and to know you're not alone.
We have sections in the forum that address specific concerns, so feel free to post or start a new topic in the section that best fits your situation. Feel free to explore the rest of the forum. You may find the other topics helpful, and you may be able to offer advice or support to someone else.
We also have a chat room for members over the age of 18. Once you have made ten meaningful posts, you will be allowed access to the chat room.
Regarding your concerns about a heart rate in the mid 50's range, there is nothing at all wrong with a resting heart rate of 56.
Something that you might not be taking into consideration is your stance when taking your pulse. If you are standing, and take your resting heart rate, you will find it to be higher then when you are sitting and resting. Likewise, both your standing and sitting, resting heart rates will be higher then when you are lying down and resting. So a resting heart rate while you are lying down is apt to produce the lowest heart rate.
One's heart rate changes very, very frequently throughout the day. There are number of driving forces responsible for this, one of those being your blood pressure. Blood pressure is one reason why a lying, resting heart rate is the lowest you will find, as the heart does not have to fight gravity to circulate blood throughout your body.
I hope this helps to ease your mind.
The very best to you, Sher!... Chuck