Do you think children can sense you are pregnant?

Jessica

This morning I was changing my little ones diaper and he points to my stomach and says "Baby!" and I said "What?, where's a baby?" and he pushed on my stomach again and says "Baby, in there!" I thought it was crazy but he has told me that two days in a row now and rarely talks about babies. I told my friend and she says she has heard that little kids can sense these things. Not sure if I believe her, but my husband and I have been trying for 6 months. My period is due again next week.

Has anyone else had this happen and actually been pregnant?