Hi Joanne,
The ferritin level is what is measured to determine how much iron you have in your blood. 607 is below the level where chelation is recommended. Since you have never transfused, it means that level is solely due to excess iron intake in the gut, which is common in untransfused intermedias. It can get to levels where chelation is needed as Barry, another intermedia in our group has mentioned.
Your iron level is much higher than what is normal for non-thals but not at what is considered to be a harmful level. However, you make want to take steps to minimize the amount of iron you are getting in your diet. One easy thing to do is to drink tea during meals, as it helps prevent absorption of iron from food. Another is to watch the amount of iron you get in your diet. I recently quoted some sources about this subject in a post at
http://www.thalassemiapatientsandfriends.com/index.php?topic=113.msg554#msg554A really encouraging thing is that your Hb came back to your normal level after falling so low during your pregnancy. And also, for an intermedia, your Hb level is not bad. I think your main concern now is making sure your ferritin doesn't rise much more. Once it gets over 1000, chelation may be suggested.