That won't damage them.

Never do it again!

Not only is it very Painful and problem causing; it is also Sinful! Against GOD and the way GOD made us!

Pray to GOD about this.

Nope..........................

The latter no. If the 'physical activity' involved severe trauma to blood circulation then its possible.

See your doctor sooner rather than later if you have symptomatic pain and swelling.

Sometimes yes

Though when people have physical injuries like this you can sometimes get infections like Epididymitis, need antibiotics for treatment.