I eat & drink my daily water, however, why is it that being in the sun..even shortly..makes me feel weak and like i need to eat again. any suggestion?

Check for...: I would like to have more information about the rest of your symptoms but of course you have limited space here to describe those. However, one thought is low blood sugar levels. It might be plausible to think your symptoms could be related to this problem. Make sure you eat small frequent meals and less sugary products. If symptoms persist visit your doctor for evaluation and diagnosis.