New Soreness a Good Thing?

Hi everyone,

I just wanted to inquire whether anyone had oblique soreness (both sides, of course) when they first started. I'm 26 years old, relatively athletic, and a former competitive swimmer -- so I was surprised when my golf swing began to create a soreness similar to swimming (a core-heavy exercise). Main reason for inquiring is that I wonder if I'm overdoing it. The soreness has faded but still occurs after a range session. In hindsight I'm not really surprised, because I was all arms beforehand. Also a bit embarassed that it took me two years to figure out that power in golf comes from the core, not unlike a previous sport I excelled in. I'm a former Tom skeptic and a new member here. What brought me here was a YouTube video Tom had about the importance of tilting. A while ago I had incorporated generally stacking my left side, courtesy of a Tom YouTube video, and saw a vast improvement in ball striking -- without changing anything else. Then about two months ago I watched a video on tilting and realized I was hardly doing that at all. I must've done the wall drill a thousand times before finally getting to the range. After puring a couple shots I figured I'd double down and go full Saguto so now I'm here and painfully unlearning everything tabula rasa style.

My main sticking point now is that my hips are way too noisy, and I wonder if that could be contributing to the soreness as well.