Hey guys im 15 and the exact same thing happened to me! This is what you need to do! When you feel that you are about to ejaculate do not tense up the muscles in your bumb just let the liquids (***) flow out. the first time i ejaculated i was so happy :P And for frequent erections dont worry the exact same happy to me still!
when i masturbate i get this tnigly feeling at the end then my erection just goes away is normal?
no, its not dangerous. The more you masturbate the more you get used to getting pleased that way. When this happens it becomes harder ejaculated because your used to getting pleased that way. try different strategies or, just don't masturbate for like a week then try again.
This is not an std question so please post in Men's health or sexual health. Thank you.