I've been having dizzy spells in the night, and sometimes during the day. i get quite warm and nauseous and start to faint. eating seems to help a bit?

I will give you some: ...suggestions of what might be going on, but you will need to follow up with a physician about this. "Morning sickness" is one of the few circumstances that eating sometimes lessens the nausea. If it's possible you are pregnant, do a home pregnancy test. Low blood sugar, anemia, dehydration and a heart rate that's either too slow or too fast can cause similar symptoms. Best wishes. Dr. Anne