stock piles?

I'm trying to figure out what I should buy weekly to stock pile up on while I'm still pregnant, I'm 15 weeks and want to get stuff weekly because I have a feeling when the baby is here money will be extra tight. I know things like diapers and wipes. But what else should I stock up on and how much? All help would be thankful. I'm not worried about clothing iteams as my friend had a baby last year that happens to be the same season as mine. So again all help figuring out what I should buy weekly would be amazing as I am a first time mom and not sure what babies go through fast.