Vasospasms!! Why do they hurt so much


Ladies, my son just turned one and with his teeth, he has adjusted his latch. I try to fix it when he feeds but he just goes right back. After feeding I get intense vasospasms, some so painful I'm in tears and I have a very high pain tolerance. I've tried heat, motrin, keeping clothes off the nipple and several other things but nothing seems to help. I don't want to stop BF yet, do any of you have any solutions or suggestions to try. TIA!