Anyone know anyone that didnt know they were pregnant untill they were in their 4th + months?

Im overweight and my problem area is my tummy. Ive taken many pregnancy tests ( blood and urine) and all bfn, but my doctor wont give me an ultra sound until i get that positive, i dont know if im showing or not cuz of my tummy area is already big lol but ive had no symtoms of pregnancy or af. Is it possible that im pregnant but it wont show up? My last af was on june 2 which was a while ago! And ive never been that late before. So did any of you laddies have a similar problem to mine? Id appricaite your stories down below. Thanks!

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