Of late I've been having 15-25 erections a day and this without my doing. Sometimes I also have this warm feeling in my penis; it's like something wants to come out, but it can't. I also feel like masturbating sometimes, getting naked and walking around. It is embarrassing because all my friends are able to ejaculate, but I can't. Please help me. I don't know what to do. I also haven't had my pre-cum yet, and I am 14. Is there a problem? Please help.
There is no problem. About half of all boys gain the ability to ejaculate before their growth spurt and the rest gain it after they have their growth spurt. That you haven't yet ejaculated is perfectly within the range of normal. Some guy don't gain the ability until they are 17 or 18.
But what you are feeling is sexual desire. That means your seminal vesicles are beginning to produce semen and are filling up. As they get fuller, your desire for sexual things increases. Most boys feel like they are going crazy until they get used to the new feeling. Likely within a month or so you'll be having your first ejaculation.
There really isn't much you can do. In order to be able to ejaculate an number of different parts of your body have to come into play in the right order and at the right time. Parts of your system is working, but some parts are still putting on the finishing touches. Until that development reaches the right point, you won't be able to ejaculate. But as I said, you're getting very close.
Running around naked isn't a polite thing to do and your mother is sure to find that shocking. If you just got to follow through on that urge, it would be best do so in the privacy of your own room, such as sleep in the nude when the urge gets really strong. Then you won't be exposing yourself to others.