A friend's miscarriage

My best friend found out she was pregnant a month after I did. I am almost at 12 weeks while she is only at 6. Two days ago she started having the signs of a miscarriage and it's pretty much in full affect now. I feel awful for her and I can only imagine what she is going through. I am not sure I know how to condolence her while still celebrating my pregnancy. Meaning, I don't want to throw in her face that I am still pregnant and not even know that I am doing it. Any advice on how to be there for her and help her move forward?