Probably Nifedipine, for Raynaud's. Talk to your doc.
Mama, it really bugs me that your LC didn't make the connection between the Raynaud's and the low supply issues and the pain, all of which suggest that your baby's latch is not what it should be. Pain means compression of the nipple, and compression of the nipple can cause/exacerbate the vasospasms and can reduce milk transfer, leading to low supply. So I would see another LC, preferably an IBCLC, and I would get my hands on a really good pump. If you're supplementing, ideally you should be doing it with your own milk. That will keep your supply where it should be, for the future when baby is better at nursing and doesn't need supplemental bottles.
When you see the IBCLC, make sure you discuss the following:
- Milk transfer (she should do a weigh-feed-weigh test at your visit)
- Tongue tie (that could be causing all your issues)
- Your pump- you want a very good pump with correctly sized shields, and the LC should observe you using it to make sure all is as it should be.