Got ur concern, it's just songy tissue gets activated during intimate occasion when heart pumps blood into....
At ur age it's could get traumatized by harsh activities n forceful impact .
Mild curvature may be since birth ...
So good u can consult and examine n assessment with Doppler study as well.
Next Steps
alcohol n tobacco and sedentary lifestyle fear of unknown cause trauma to inner layer of blood vessels making impotent
Health Tips
at this age u master bedroom skills will make u on top of the world till the age of 80+