I’ve tanned many pregnant women, including myself! The products I use are not harmful and are paired with a technique and equipment offering ventilation and barely any product in your air. I DO NOT give permission, if you have concerns please talk with your doctor.
Please plan on cleaning your breast post appointment before feeding your child to avoid product in milk or transferring to child. If its an option for you pumping and bottle feeding until your first shower is a great alternative and helps avoid ruining your tan or getting your baby dirty. You want to avoid skin to skin contact until you’ve showered so if you plan on breastfeeding please make sure your arms and any other typically exposed area other than the breast is covered to avoid transferring your tan.