It is possible you had an idea of what a perfect breastfeeding was, and now all your ideas felt down.
Doubts, insecurities, pain, sore, redness… there are many issues at the beginning of breastfeeding and all along. It is very important to feel supported by someone who does not juge you but has all the information and tools you need to deal with.
Lactation is sociocultural based, it helps to have a lot of doubts about it, there are thousands of inherited myths without any scientific basis.