Cravings!

Al
It seems that a lot of pregnant women crave one or two specific things throughout pregnancy.  I have been craving a million different things depends on the day- pickles, peanut butter, watermelon, kiwi, chick filet, buffalo chicken,sour candy,  list goes on. I just always hear people say oh I craved sweets with my first and salty with my second. I'm craving a variety. Anyone else crave different things depending on the day?? Wondering if these cravings are just created in my head and feeling guilty when I crave the crap food!! Wonder what it all means.