Help please!!!!

St

My daughter is two days old and I think she is using me as a pacifier. She has been exclusively breastfeed since I had her on the 30th. Tonight/this morning for some reason she is wanting to feed continuously. My breasts are so sore, she won’t sleep and I am near tears. I gave her an actual pacifier for the first time and she is sucking it but as soon as it falls out she cries. My husband and I are first time parents, I am so tired and I don’t know what to do. Is she not getting enough to eat from me? Is she using me as a pacifier? Should I give her formula??? I am lost here.