same thing happened to my female normal. huge ovy, shed, then nada. this reduction in girth was not in the bp breeding articles i've read so i was ready to accept failure.....but as the days pass, i'm noticing her developing the ridged back, and the swelling seems to be returning little by little so my hopes are high again. my expected lay date based on ovy is May 9, i'm monitoring her size and behavior very closely.