I am a first time mom to a 3 month old little girl. I purchased a Lansinoh Double Electric Breast Pump because of the reviews I read online, I couldn't find a bad one!! For some reason though, I cant get more than an ounce out of both breasts when I use this pump. What could I be doing wrong? I'm contemplating purchasing a Medela brand pump but cant justify spending a few hundred AGAIN if Im going to have the same issue.