Quote Originally Posted by athena View Post
I saw this doctor towards the beginning of March, as my resting HR had doubled overnight (normal is around 40-50, was over 100 when I checked).
This sounds like a change in HR from electrolytes (which you already thought of), acute change from overtraining or infection.

I might see if I can get another doctor to order a bone density test, but I feel horribly guilty asking for something I don't "need." I am not worried so much about my current health status, but more of what damage may have been done in the past. I think I might ask my PT about exercises to help build up bone density. I did used to run a lot, but with my recent knee injury, I have been cycling more (and I am aware that it can have a negative effect on bone density).
If I was working in Africa and did not have access to a bone density scan, I would assume that you have bone density issues based on your history. So do you *need* a bone scan, maybe not. But I would still expect you have bone density problems. All the test would do is confirm it, or less probably, disconfirm it. So I would move ahead with a plan of attack to increase your bone density. You've got nothing to lose and a lot to gain. Starting by talking to your PT is a very good idea. It would also be a good idea to find another doc, maybe a sports med doc because they will be more familiar with atypical presentations of bone density problems in young female athletes. Your ammenorhea is a very important sign that needs to be mentioned. You should also keep a food diary so that you can start observing what you eat and communicating these things to your healthcare professionals.

You should take a look at this and this.