I looked into this before, but didn't know my blood type. I called my mom (when she was alive) and asked her. She was able to tell me her type, my dad's type, and my brother and sister's type, but had no clue what mine was.
I could find out if I gave blood, but I've been told my blood pressure is too low for me to do that. I don't have medical insurance and I don't want to pay out of pocket to find out. Any ideas how I can find out other than the 2 things I can't do?