I've gone through ECT twice, and both time I started improving pretty quickly, withing 3 or 4 treatments. I would think this far into treatment you should be noticing an improvement if it is going to help. It doesn't help everyone though, and perhaps you are in that group. It's great that you haven't had any memory loss. People think memory loss is a given, but it isn't. My first time through I had some slight memory loss surrounding the time of the treatments, but my second time through I didn't have any at all. Everyone's experience is different. I would certainly talk to your doctor if you aren't seeing any improvement by now.