When I was in college I had a friend who didn't even know she was pregnant until she was in labor. She went to the ER with a BAAADDD stomach ache. The baby was a complete surprise! She said she got her period the whole time. Strange things happen. I watched a show on this topic on Oprah many years ago- a woman (young girl) was out on a boat, waterskiing, and she had a stomach ache, afterwards her friends stopped at a mini-mart and while they were there,a baby came shooting out through her shorts! onto the floor of the car!!! Another lady was in bed and she called her husband into the room, something came out of her, he pulled back the covers at the BOTTOM of the bed and a baby was there! Surprise! My ob-gyn doctors wife didn't know either until 5 months, and her husband was my ob. She told me she just thought it was a middle aged spread thing. Life is funny sometimes.