 [ Symptoms ] what activities should i not do while pregnant [ Disease ] change the cat is litter box cat feces can transmit an infection called toxoplasmosis which can lead to severe problems in newborns including low birth weight jaundice mental retardation and convulsions use saunas hot tubs and tanning booths excessive heat can be harmful to the baby and has been linked to spinal malformations paint let somebody else paint the baby is room pregnant women should not be exposed to toxic substances and chemicals which include paint and cleaning solvents get an x ray unless you absolutely have to avoid tests like x rays and mammograms while pregnant which can be dangerous to your growing baby if you absolutely must have an x ray make sure that your doctor or dentist knows you are pregnant so they can take extra precautions ride the great american scream machine or the tower of terror there is concern that the rapid stops and jarring forces of rides like this could cause placental abruption premature separation of the placenta from the uterine wall play it safe and stick to the ferris wheel until the baby is born