Ay, mukhang on track ka pa! If your EDD is Sept 15, you're almost there na, so it's totally normal na mataas pa rin ang bump at this point, usually bumaba lang talaga siya closer to delivery pag nag-engage na ang baby sa pelvis. A few of us in our mom group noticed the same thing, tapos biglang bumagal everything couple of weeks before labor, so I wouldn't worry about it yet!