Have you stopped using your dream journal before your two-week dry spell started? I know that there have been times when I stopped using my dream journal, and then I started to have dry spells.
People tend to forget dreams if their life starts to get too stressful. You need to make extra time for yourself and your dreams. When you wake up in the morning, don't think about anything else except remembering any dreams you had the following night.
eg. when you wake up, don't immediately start to think about what the day ahead has to offer, because that will probably erase your dreams from your memory. Just focus on your dreams and that's it. Good luck!