Got transplant call but missed it.

Got transplant call after 2 years but I miss it.

I got my first transplant call after 2 years on dialysis. And I travel every weekend to reduce my anxiety and depression of waiting for my kidney transplant. My boyfriend got first call yesterday night while I was away, I feel so bad. How long between first call and second call? I just feel like I lost all the chance. I used to thought I can't get the call forever.