my baby woke up screaming🙁

Kayley • 24 years old, I have a little boy who’s 4 and I’m TTC my second baby!! 👶🏻
My son is 4 months old and this morning at 4.30am I got woke up by him screaming, my son's nails were due to get cut today as the were a little longer than usual, my poor baby has scratch the utter crap out his nose. Any advice of what I can do to help the pain, can I use antiseptic cream on him? It looks so bloody sore🙁