My daughter is now 5 weeks old. When I have been breastfeeding since she was born. While still in the hospital I saw a lactation consultant who told me I had an inverted nipple on my right side. I've since had to use a nipple shield (on both nipples because baby now doesn't like the left breast without it). It been going very well until this past week. I developed a pimple like lump on the side of my nipple which was extremely painful. I could not put the shield on an if I did I was in lots of painful. When she latched on. My concern is that now that breast doesn't seem to produce as much milk as the other or as much as it did before this happened. Is there a way to be it to begin to reproduce as much as the other? I feel like she just gets frustrated when I offer her that breast because she isn't getting any milk from it.