I have been exclusively breastfeeding my 6 week old since birth and just went back to work. She has been nursing 8 times a day for 15 minutes a side and her weight gain has been fine. She seems satisfied all day. I had never pumped a full feeding until yesterday to see how much she actually gets from me. We started her out on a bottle and she got 1.75 ounces per feeding every three hours yesterday. When I got home I nursed her and she spit up immediately after both breasts, and three more times before her next feeding. She was also fussy and gassy all evening. It seemed like she was over full so today we gave her 1 oz feedings from the bottle and she has been fine. I found out from pumping at work that I only produce on average 0.5-1 oz per every three hours. Does this sound unusually low? I don't want to underfeed on the bottle, but I don't want her spitting up and gassy like she was yesterday either.