Breast/nipple pain

Amy
Anyone else experiencing excruciating pain in your breasts or more specifically your nipples. I'm 34+5 and I've had this for the last 4 days or so. It's awful, I'm not usually such a wuss but this brings tears to my eyes. The only thing that has helped slightly is warm washcloths and that only helps for seconds at a time. If anyone has had this do you know the cause of it?