The Liverpool striker is on-loan at West Ham for the season.
He told the West Ham Match Programme: "I love football so I want to play - for myself, for the manager and for the team. I want to do as well as I can and play every week, so that's why I need to keep fit.
"I was feeling really good in the Swansea game. I'd been back in training and was raring to go, as were all the lads. I put myself about and got the winner.
"The fans have been very patient with me. They could have got on my back early doors, with me being injured, coming back and getting injured again and not scoring the goals that everyone had hoped I would score.
"To have them singing my name was excellent. I definitely didn't expect to hear a load of Londoners singing my name when I was growing up in Newcastle! Everyone has been great with me here."