I have a quick question about pump breastshield sizes. I have a Medela double breast pump, middle of the line, not the really nice one. It comes with a certain size and it works okay. My concern though is that pumping is making my nipples more sore than breastfeeding alone even though I've only pumped 3 times so far (very spaced out like over days). This morning I started wondering if the soreness was due to pumping, which I think it is cause I'm sorer the day after pumping than I normally am, and then was wondering if I could possibly need a larger size breastshield. I'm not that large chested, but when I pump, my whole areola doesn't go into the channel of the breastsheild. Should it? Or do I just have to get used to pumping like I'm getting used to bfing? TIA