FLA Blowin Up

Why would my FLA file be so freakin huge all of a sudden. I thought it might the song loops I imported or some graphics…but I made a copy and deleted all that and it is still huge 12MB. There is not much going on here…just basically a container with some navigation. I need to upload to this site so peops can look at it. But I cant because it is to freakin huge…Please help reduce FLA Size…consuming my computer…lol