Hi, Courtney -

Sorry to hear you are in pain! It's possible it's from a shallow latch...
If nipple is compressed during the nursing session, the nipple can be painful after the feed when the blood starts flowing back to the nipple. It may even look white or purple.
The best treatment in this case is fixing the underlying issue (i.e., trying to get a deeper latch). In the meantime, to help alleviate the pain, try putting your palm to your nipple as soon as baby unlatches ...

Some moms do experience "vasospasms" even though the latch is "good." For more info, take a look at this link:

https://kellymom.com/bf/concerns/mother/nipple-blanching/

If the pain persists, I would recommend making an appointment with your OB to rule out an infection or thrush too.

Good luck!

UGH! I'm sorry! Some moms do experience nausea during "let down" because
of hormonal changes. Does it subside after a few minutes or stay
throughout entire nursing session? Do you experience it with pumping too?
Unfortunately, I have not heard of anything that alleviates this all
together. But, many moms do learn how to manage it and many moms report
the feeling diminishes over time. Many moms report that a snack right
before or during breastfeeding helps a bit (usually a carb!). Are there any
tricks that make it feel a bit better for you -- maybe deep
breathing/meditating through that phase? Distraction with phone or TV?