I freaked out, until I did the math

There's still a possibility that it's yours. My brother was a month late, so it took him 10 months.

technically you give birth at the END of 9 months, so your pregnancy can go well into the 10th month. I know this because I was once apart of the pregnant race and you read a lot of pregnancy books plus the doctor told me

pregnancy is 40 weeks

From the moment of conception to birth pregnancy actually lasts 10 months.