Sore nipples HELP!

Ashley • Married August 23, 2013, Mommy to Hudson, Layne & Lenyn
My son is 8 months old and he is EBF. I am 6 weeks pregnant with my second child and my nipples have been super sore. When my son nurses it's starting to hurt really bad. Is there any solution to this or do I just need to toughen up? I don't plan on stopping breastfeeding anytime in the near future. Any advice will be helpful! Thank you!😊