I masturbate with a pillow and after a hour i went in bathroom when i pee i saw some blood came out i very afraid if i break my hymen is it blood of hymen ????? please?

The presence of bright red blood indicates recent tissue injury. Your description of the activity does not provide enough information to indicate a source. Only a direct exam can do so. Small amounts of blood that diminish over time would suggest the area has been minor and will heal. Persistent bloody drainage would indicate a larger injury.

If you did not insert anything inside it is not from the hymen. It could be from abrasion around the area rubbed.