CA125 headed upward, not good

Started Avastin 8/20/09. CA125 was 89.3 when Dr. Im put me on the biological drug. After going down as low as 46.4 (12/3/09) and 46.5 (4/29/10), it went back up to 84.4 yesterday. Terri Rowley scheduled me for a CT Scan 6/23/10 to find out what's going on. The most recent 4/19/10 CT Scan said the 3 cancerous nodes still in my body were stable. Am not going to panic, but it's depressing. I had hoped the Avastin, which I'm tolerating well, would hold the nodes (or decrease them) for another year or more at least. I've just started to get some of my energy back despite recent flare-ups with acid reflux which my gastroenterologist is addressing with medication.