Hi Temo642 and thanks for posting this question and thanks everyone for weighing in!!
As someone responded here it may be a problem with dehydration so I would suggest to drink plenty of fluids.
On a side note try to increase your stretching activities since sometimes if a muscle is tight and sore it may cramped up. In other words and in a very simple way: if the muscle is really tight the nerves crossing those muscles tend to still have to go through the muscle and sometimes feels like a needle. It can be a build up of lactic acid.
Increase stretching, stay hydrated and careful of training hard. You always need to increae progressive muscle condition and strenght if you practice a sport.
If the symptoms persist please consult with your doctor asap.
thanks!
Agree with strongus. Rest as much as you can eat plenty of green leaf vegetables and stay hydrated.
Try and have enough rest, thus sleep as early as u can