As the first poster says, do it in a place where you can cover it for a professional look. You might want to be an executive in a bank some day, and having "F the Cops" on your face would make it harder to get a job. lol
Where ever u want. There is not a designated area for ur first one or any after that. Just make sure u go to a clean shop and done by a professional
Are u waiting till after baby and iny opinion first tatts are mostly regretted when u get older so if u truly want it get it in a place that can be covered up in case a great job opp comes later on in life