Maybe it's just your body telling you it wants a sugar hit for energy?
depends on context and the associated feelings mainly
To dream of bread represents fundamentals or simplicity. Basic needs or the root of a problem. Bread may be a sign that you are trying to "survive" something with basic necessities. Bread may also reflect someone that is pointing out the more fundamental aspects of problem you have.
Negatively, bread may be a sign that you are not seeing the truth of an underlying problem. It may also point to your emotions during a financial difficulty time.
They don't have biscuits.
To dream that you are eating a wafer suggests that you need more diversity and spontaneity. You need to gain a better understanding of various facets in your life and incorporate them together. Alternatively, the wafer symbolizes something or some situation that you need to handle with care.