If u want to check whether it is really or not overtraining, more popular are muscles, leg
pains when walking up the stairs (legs like wool, you can not produce the maximum strength), morning heart rate (some more beats if it is 1 or 2 stage of overtraining or less when advanced), need for salt / carbs, foggy brain, headaches after more effort / tiring day, disturbed relations with family / friends, sleepiness (everyday) after meals, insomnia, mornings fatigue, or simply — take something heavier and exercise it, and if you'll feel
shooting in the
joints, weakness of the ligaments and muscles, you can be sure that you are overtrained.
Joint pain is gone, what I used to think were «
shot» rotator cuffs that have been a chronic source of
pain for years are now healed.