Thigh muscle injury

Hi,
I have had this problem for a couple of years now.

I play football and the problem is with my right thigh when kicking the football.
I get a pain in my thigh which is really painful when kicking the ball with any power. For the first 10 minutes it means I cant kick the ball with any power at all. After the first 10 minutes the pain eases slightly, but I still cant kick the ball with more than 50% of what I used to due to the pain.

The problem only lies when kicking the ball. I do not feel any pain at another time either when I walk/run and stretch.
I have rested the thigh many times, but the pain still persists.
Can anyone give me advice on what the problem is and what I can do about it. I have tried to strap the thigh and use deep heat, but nothing stops the pain.

I would be grateful for any help.

Thanks

Im having the same problem and it is extremely frustrating, 6 years down the line have you solved the problem? if so what was the culprit, ive rested my thigh but as soon as resistance is agaisnt my foot my thigh gets extremely sore.