In the last few days, my nipples have been really painful during the first 5 minutes or some of nursing. I really dont know whats causing this. To make matters worse my 4.5 month old has started a really painful unlatch thing where she pulls my nipple with her mouth and stretches it like a piece of gum while twisting her head. The pain is so intense in the 1st few minutes or nursing that it made me wonder if I have some type of an infection but then it goes away after a few minutes. Has anyone been through this?