I had Botox last week and found out that I am 5 weeks pregnant. Did I harm my baby?

Women are pregnant or breast feeding have not been studied for botox. However, your situation is quite common, and no reported adverse effects have been reported. Do not have another treatment while you are pregnant or breast feeding. However, I would not worry about your prior treatment either.

Dear Kamila, Congratulations! While Botox is not recommended for
women who are breast feeding or pregnant, the concentration is low and the
injection is localized. This makes the likelihood very low that you harmed your
baby. Do not get any more injections until you are
finished with your pregnancy and/or breastfeeding, and enjoy your baby!