no

You cannot test positive for HIV unless you have the HIV antibodies in your blood, which a pregnancy cannot duplicate. It is VERY important to be tested when you get pregnant, even if you think it's impossible, because in 2007 fewer than 150 babies were born in the US with HIV, and those were almost all to mothers who did not know they had the virus until after the birth. Knowing your HIV status is positive can and will save your baby's life.