Does an Epidural block out ALL pain from labour?

I had an epidural due to a 72 hour labour and having to go onto an oxytosin iv drip to help with the contractions, I was in too much pain to feel the needle going into my back and it was a relief to get the epidural, the only thing I felt during the birth itself was when the baby's head crowned, but it was more of a discomfort than a pain.