Ok so I'm now 11 weeks 3 days a day we have been waiting till 12 weeks and my 9 year old had a…

Ok so I'm now 11 weeks 3 days a day we have been waiting till 12 weeks and my 9 year old had a conversation with my 6 year old about how I had a baby in my belly because of that dang sonogram pic I keep in my visor I only know this bc my 6 year old repeated it to me... is it bad I just lied and said it wasn't mine even though we will be telling them in the next week or too

Picture was 6 weeks 5 days I believe