Problem with losing fat in Insanity

I'm in the middle of insanity andI seem to have hit a problem. I'm in the third week of month two. From month one I saw so much improvement! Like crazy fat loss. Ever since the beginning of Month two I haven't seen any improvement.. In fact, I can't see my abs as good anymore.. I am on vacation so I have been eating so treats but I really don't think that could have affected it because of such a crazy workout that I do.. Maybe from the not as healthy food I have taken in more salt and I'm just bloated so I can't see my and abs as good? Did I fall into a plateau? I'm so confused and not sure what to do at this point. Please help me out.. Thanks