Hamstring

Has anyone experienced pain in the lower part of the hamstring, near the back of the knee (specifically on the left side for me), after doing lying leg curls? I can still bend my knee, but there’s a noticeable pain in that area afterward — wondering if this is common or a sign of improper form or overuse. Also I train hamstrings with only lying leg curls and RDLs since my gym doesn’t have a seated leg curl machine.