Could an unsheilded ct scan and multiple x-rays at 5 weeks gestation result in any of the problems wih my son? (autism, pvl, dysplastic kidney, silent aspiration, preauricular pit, heart murmur)

Check it out: Anything is possiblepossible. We generally want to avoid radiation exposure especially in early pregnancy. Make sure your OB knows as they may want to do more monitoring during your pregnancy.

Doubtful: I think the major concern about exposing a fetus in utero to ionizing radiation is the additional lifetime risk of cancer that it potentially could cause.

Need: To have dose calculated by hospital physicist. Risk to fetus can be suggested from this data. Then discuss with your OB / gyn doctor.

Probably not.: Fetal organs form the 3rd-8th week after conception, before many women know they are pregnant. The brain continues to form throughout pregnancy. Seek referral to a Developmental/Behavioral Pediatrician for a diagnostic evaluation including Chromosomal Microarray & DNA Probe for Fragile X at http://www.chp.edu/CHP/autism. See https://www.drnpa.org/File/publications/the-coverage-of-autism-services