When I was 8 weeks pregnant with my daughter Beibhinn (diagnosed with ITP in Feb 13, at the age of 7 yrs), I had a heavy bleed with no cramps. At hospital they detected a heart beat. As I am O-Negative, I had to get an Anti-D injection. Beibhinn is O-Neg too. Numerous reasons for bleeding. I googled reasons for bleeding and VTS appeared. Beibhinn is left-handed, a symthom of being a twin. I was just wondering if Vanishing Twin Syndrome connected to ITP?