Hello, I had my APS confirmed 2 weeks ago after sufferring various symptoms for the last few years. My GP told me that my only problem was being overweight and over fifty! Last July I had a large DVT in my thigh. I was put onto Warfarin but my INR was very erratic. Six months later the DVT spread down my leg to the back of my knee due to prolonged periods of sub-theraputic INR levels. Eventually I was taken off of Warfarin and put onto Rivaroxabin earlier this year. So, I am wondering if anyone else here has experience of it.