Hi bumblebee, I think the baby should be fine as it was a one off and the baby is quite developed however I wouldn’t risk it again and the dangers of your child being physically or mentally damaged if you continue use, which is a high chance.
you should contact CA and they can help you find local meetings I think it’s really important for you that you tackle your addiction so that you reduce your chances of relapse again whilst pregnant or after the baby is born.
you can also go to your gp for drug service referral but I understand this may be scary for you, defo try CA/cocaine anonymous
good luck xxx