Big girl and baby bump

Question for all plus size mums-to-be:

At what point, if ever, did you present with a pregnant belly? I’m a size 16/18 and 26w4d and unless I purposely hold myself if a funky position you can’t tell that I’m pregnant. I lost over 70 kgs before becoming pregnant and that left me with a flabby belly. If I pull up on my upper belly to tighten the skin I can see a baby bump. Because of the weight loss I am self conscious of looking fat again hence my preoccupation with when bellies look pregnant. TIA