Is it normal that i've only masturbated..

Is it normal that I've only ever reached orgasm once, I am not too old and I've only started though I've been told I should of started awhile ago. I am not overally comfortable saying this.. But my penis 4" soft and 7" hard, whenever I got an errection i just hid it, not knowing how to get rid of it. I've never had a girlfriend, though I have have been asked out I've just always been too nervous to say yes. (9/10 of the girls were younger.) I experienced my first orgasm awhile not too long ago, though my penis is still throbbing if you know what I mean. I don't know whether I should ask my mother for something to ejaculate in if I am not using the toilet. If you could give me your opinion on both of my questions, then I thank you greatly. (is it normal one and the latter one.)

Thanks, Ermo/Danny