You usually can return to your normal routine right after a chest CT scan.
If you got medicine to help you relax during the CT scan, your doctor will tell you when you can return to your normal routine. The medicine may make you sleepy, so you'll need someone to drive you home.
If contrast dye was used during the test, you may have a bruise where the needle was inserted. Your doctor may give you special instructions, such as drinking plenty of liquids to flush out the contrast dye.
If you're breastfeeding, the contrast dye can be passed to your baby through your breast milk. Ask your doctor how long you should wait after the test before you breastfeed.
You may want to prepare for the test by pumping and saving milk for 24 to 48 hours in advance. You can bottle-feed your baby in the hours after the CT scan.