Hey, there's no harm in getting a second (third, fourth) opinion! I'm just personally a bit wary of getting advice relating to breastfeeding from anyone but an LC.
I really do hope you can figure this out soon! It is very frustrating and upsetting - and very isolating also, when you feel you're the only one like this. The truth is many mothers struggle in the early months, we just don't talk about it enough i think.
All the best~~