Penis Foreskin gets pumped up after masturbation

[Sicaubo]

Can anyone tell me

I masturbated and my penis feels tight and the foreskin gets pumped on the one side.

There's no pain / i can easily pull the foreskin up and down and when it's in ejaculated position is hard !

It never happened before

What should i do ?

[Hidden]

You could discuss the issue with your doctor.

[jimfromcalif]

You are jelqing. Let up on your grip.