Still pretty small
The most recent report from the centers for disease prevention
(cdc) are disheartening, stating that autism
occurs in 1 in 88 live births--and 1 in 57 male births.
Still, that is a very broad definition of autism, and a lack of family history probably reduces your specific risk.. Kee[ in mind that, miraculously, the vast majority of babies are born with no problems.