So here's the thing, my newborn is 4 weeks today. He had started on formula when he was born and once he was able to latch on his own I started breastfeeding him as well. So he's feeding on both. But lately he doesn't want to formula feed and only wants my breast. The thing is I don't know how much I am producing so I think he's not getting enough since he stays on my nipple varies from 30 mins to an hour. Plus he has not pooped for 2 days. New mommy here so I'm a little worried.