The goal came 19 minutes into the match against his former club at Stamford Bridge when he turned in a cross from Eden Hazard to open the scoring for the club he joined in 2001.
"It's special, it's obviously a landmark I've been working towards and I'm just pleased to get there, pleased to score an important goal for the team," the 34-year-old England international told Sky Sports.
"I've been very fortunate to play for the club for a long time here with great players, players that put the ball on a plate for you sometimes like Hazard did there."
He has set his sights on Bobby Tambling's club record of 202 set in the 1960s and 1970s and has enough time left to reach that target before his contract comes to an end this season.
"Personally I just try and stay focused, I know that if I'm playing regularly and training hard and well then I can contribute the goals," he said.
"I need to stay on top and make sure I'm professional and if I can do that then I can will to keep chipping away at the record."
"[I was] really annoyed, I won't sleep tonight. I do love scoring goals, I love being able to arrive in the box," he said.
"I think I relaxed a bit on that one and skied it over the bar - my dad will give me a ticking-off for that one when I get upstairs."
