Why is my ass sticking out more now?

its pretty aggravating!

anyways I was 236lbs with a 30% body fat last year but with the help of the P90X3 I was able to bring my weight down to 197lbs and 23% body fat. but of course I didn't want to stop there so I decided to do another workout program that help me come down to 188lbs and now a 19% body fat. I'm happier now even though I am still not where i really want to be but lately this thing has been aggravating me. I take pictures of my belly to chart down my progress but I notice that my ass sticks out more now till the point that it kinda distorts my pics.

I mean what could be the cause of this? I didn't even do much squatting. and I did the P90X3 not beachbody brazil butt lift and let's not forget that this doesn't look masculine either. so how can I flatten up my thing?
Why is my ass sticking out more now?
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