I think it would hurt even if you weren't pg when dd pulls back and pushes on your breast. I would try breaking the suction with your pinky when she does that. My ds was older when I got pg with the twins, so he weaned at 22 mos when I was about 2 mos pg because of the nipple pain. Have you tried Lansinoh? If you don't have problems with thrush you can put a piece of plastic wrap over the nipple to keep the Lansinoh from rubbing off onto your bra or shirt. Maybe the pain will be better once you're into your second trimester and the initial hormones have calmed down a little. Wish I had some better advice for you.