How To Treat Excess Muscle Pain Due To Intense Workout?

I m 72 years old.in good health. Keep active & workout 3 time a week minimum..the last 2 times I did vigous ex cerise, the next day my muscle ached & had trouble sleeping & couldn t get warm..Had a stress test 2 years ago & passed...my BP has always been normal..Should I contact my physician now or wait? Thank you