Laura, I have been having wafer thin ham cut up in my omlette as I too read it was allowed. The amount I have is minimal so I'm not overly concerned but I wont be buying it again after this pack is finished. Having read quite a lot of blogs by people venturing onto Dukan, I have seen that although in the most part people stick to it religiously, there are certain things that some people still consume (in moderate doses) but still shared the same success. Don't get me wrong, Im not suggesting we all cheat but I think we should keep in mind that there will inevitably be slips along the way but with such drastic changes to our normal diets, the odd slice of ham here and there isn't going to be the downfall - Krispy kremes on the other hand....
With regards to eating enough, have you had a look at the Daily Menus thread and posted what you are eating? I did it yesterday and got some great feedback (I now know to steer clear of lamb and pork!). Im finding it really helpful to compare what others seem to be eating.
I finally got to read the attack sections in the book today, which says you should weigh yourself regularly during this phase - maybe that could help?