Piercings/ Tattoos ?

So I'm 10 weeks 1 day. My birthdays in Aug and I really want to get my septum done. Would I be able to while I'm pregnant ? Also I'd love to get a tat but could I do it or would I have to wait till after I have ? I'll also be breast feeding again so would I have to wait after that or I can get a tat after I give birth?