I’m due to have my baby girl in a few short weeks. I’m going to try breastfeeding for the 2nd time. My first time around, with my 3rd child, didn’t work out more than a couple days. I attempted to pump, but let my emotions get the best of me when I heard I wasn’t producing enough and he was losing more weight than he was gaining. I have a “made for me tommee tippee” portable pump but it comes with the wrong flange sizes. I measured myself and I’m a size 16mm. I can only find 15mm or 17mm.My question is, does anyone know what size I should get? And where I can find the correct flanges for this type of pump?Also, if anyone has any breastfeeding tips that would be amazing. I’m basically starting at square one and really want a successful experience this time.