Chest tightness

Question
Hi-
I am a 42-year old woman in decent overall condition.  A few years ago, I swam quite a bit in the summers, but for the past two years, whenever I swim laps, I wake up the next day with a feeling of chest and even throat tightness as well as a sore upper back.  I used to start each summer slowly and build up, adding laps in my backyard pool, but now I find that swimming 500 meters or so (of crawl) produces this feeling the next day.  The doctor has ruled out any heart symptoms, and my husband says it's just sore muscles, since my upper back will be somewhat stiff as well. Does this sound reasonable? Should I just swim more to build up my muscles, or should I do something else before swimming?
Thank you very much for your time.

Answer
I can see the chest and back tightness being related to swimming, but am not sure about the throat.  If you are lifting your head up to breath and not turning it to the side the throat tightness is a possibility.  The one thing I would recommend to any one who is swimming is a stretching regimen before getting into the pool.
Hope this helps,
George