Pain in my neck during masturbation??

Katy

So I masturbate using a bullet and for the past two weeks or so I’ve been getting a stabbing pain in the left side of my neck, it’s really intense and although it doesn’t stop me from climaxing, it is very painful during and after finishing. I saw something online about it possibly being caused by tensing the face muscles and potentially some links to the pill (which I started about 2 weeks ago, suspicious?) has anybody else experienced this, is it need for concern or will it ease with time? Thanks 😊