hello Deewillis,
I am very new to sugarapples, my seeds have just sprouted. I do have a tiny bit of info for you, SA need hand pollination to form fruit, that is probably why your flowers have dropped. It could be possible that your tree is too young to hold fruit even if flowers were pollinated. I saw that you posted this initially on the citrus forum, if you do not get more answers here, try the tropical fruit forum. I know there are at least 5 or more people there growing SA and have been for awhile.

goodluck,
-Ethan

here is some more info for you
http://www.hort.purdue.edu/newcrop/morton/sugar_apple.html