why does it hurt when i meditate?

Going deeper might have temporary physical results:

its because you are straining. to successfully meditate you must not try. you can't have a goal. you can not desire. you must realize there is nothing you can do to better your situation you must sit and wait.

your body knows what to do like you body knows to breathe don't try and force anything. and most of all don't try to guide your meditation otherwise you will just be fooling yourself.

I know this is short and doesn't explain much but modern day meditation techniques mostly new age are bogus. its not meditation.

this video sucks because it plays music but just listen to what he says and try it yourself it works.

You're stroking too hard.

Give your glands a break.

Why does it hurt when I pee?

nobody can feel their pineal gland, dumbass.

I have found that you cannot "force" things to happen. One time I had the most beautiful intense magenta color float in my mind. I have never seen a color like that in Nature. The next day I tried to "force" the color to return. No such luck!!! The trick is to be still = body AND mind.

Try shrooms.

exactly you cant force yourself to sleep. just as you cannot force yourself to wake up spiritually. it just happens and when it happens you realize there is no difference between being "asleep" and being "awake" its the same dance and song.

I would say it's because your muscles are so accustomed to receiving constant neurological input, that when that is missing, they are so conditioned to nervous stimulation they manufacture it themselves. I have the same thing happen when I meditate.

it might be a tumor

Be as still of mind and body as possible.