It is honestly a bit difficult to work out why you are feeling so hungry all the time. SW doesn't limit the amount you eat, just what you eat.
Have bigger meals. You may have seen that quite a lot of people on this forum say that they are amazed at the amount they can eat.
And although the book says that superfree food should be your FIRST choice for snacks, it doesn't mean it has to be your ONLY choice.
Could you perhaps consider whether what you are feeling is hunger, or is it that you are just missing certain foods? If this is the case, then you will adjust to this - and remember you can always have an extra HEXB and syn it. Are you using all your syns? That's what they are there for.
The other thing is that I sometimes think we forget that being hungry is not always a bad thing. We as a society have got so used to being able to stuff our faces at all times of day that we seem to have forgotten that it is actually a good thing to be hungry before a meal.
Anyway, perservere, and I am sure you will be feeling more positive soon.