Ob-Gyn questions? Ask a gynecologist online.
This is Dr. David
this could be due to your post menopausal state.
are you using a clitoral vibrator like a hitachi self massager?
vibrators can cause scar tissue in the area and cause stiffness
there could be some nerve damage possibly causing the pain after climax
nerve pain medications like neurontin or lyrica could help
have you talked this over with your gyn doctor?