Breastfeeding Pain/Bleeding Nipples

I am waiting to hear back about an appointment as I was referred to a lactation consultant (could be a week or two...). I currently have lots of pain and a red spot (which I can only assume was bleeding) on my nipple. I have gotten help from many nurses and was given quite a few tips to improve breastfeeding and latch - all of which I’m trying. My question is, will continuing to feed with a sore nipple have any detriment to future breastfeeding (is the only con, the pain I experience)? I really don’t want to discontinue breastfeeding and I don’t want to use a nipple shield as that can reduce supply.