Hi - I Started Weight Training On Tuesday After Not

Hi - I started weight training on Tuesday after not working out for about a year. The workout was very rigorous for me but I felt fine after. I became sore through my arms and chest the next day - not uncommon that I know of. I did cardio the following day with a light leg work out because I didn't have a lot of time. This morning I noticed my urine was darker than usual. I worked out at high intensity again today and have been drinking a lot of water to stay hydrated. My urine is clear now and I've been urinating often - typical for me after drinking a lot of water. My concern is rhabdomyolysis. Would my urine still be brown? My arms and chest are sore again today but I'm thinking it's because I worked out again. Otherwise I feel great. How do I know if I have rhabdo without going to the doc/er?

Thanks!