Help ,, hamstring injury ?

I have already asked a question about this before, about my hamstring being pulled) and it seemed to clear itself up just fine. But then it happened again, both of them were very painfull. My left one is now fine but the one on my right is still the same after two months. I have tried doing gentle streches on it which only made it worse, and i have tried resting it for a while which worked untill i started dancing again i googled it and i think it is the Biceps femoris that is hurting (if that means anything.) Please give me advise if you can thankyou :)