Where did this booty come from?

I guess this is not anyones typical problem but I have always had a non existent butt somewhat all my life. Past few weeks I decided to pursue this crazy ambition to compete so have cleaned up my diet and working out daily. I had a hip replacement last summer due to cancer radiation cutting off blood supply so have not been doing squats with weights but have been doing other glute exercises. My rear is not only noticeable by my husband now but others. When I pass the mirror yes I smile but in public I am timid about it...lol
.why now has it appeared and what can I do to lose some of it or will it take a better form as I work out? Ugh. Could this be for more protein being implemented in my diet?

by Smallone17 via Bodybuilding.com Forums - Female Bodybuilding