Good question, it's normal to have some aches now and then, but it's generally worth seeing someone if you feel your life has been significantly impacted by the condition. Poor sleep, persistently high levels of pain, and an inability to do daily or recreational activities are good indications - anything meaningful, basically.

Another good question, it can vary but get a progressive exercise plan designed to improve the condition, guidance on returning to previous activities, education on what it is, why it is sore and when will it likely improve.

Hard to say, each condition is very nuanced with unique factors to consider. You can find some specific information by clicking the links in the advice section.