I started taking my daughter out of the house before she was even a week old, the first being 2 days old. It wasn't exactly my choice but we had to go back to the hospital everyday until she was a week old because of jaundice. After we went to the hospital my mother took us to eat she my daughter was 2 days old. I am not a fan of infant seats, we use a convertible because I just don't want to lug a seat around and my kids have both hated car seats lol. What I did when I took her out and well what I still do is wear her and keep her covered .

same ^

I took my son out when he was a week old I kept a blanket over his car seat while in stores and didn't let anyone near him though