Whats wrong with me?? please help?

i am a very straight 16 year old teenager last night i was bored and i got big moobs perky ones so i started rubbing my nipple and next thing i noticed them geting errected and my was hard to and then had a huge great feeling orgasim i had never felt before and i was moaning aloud after that noticed my self ing hard in my pants and i ed hard but it was gr8 yet you should know that i didnt touch my whats wrong w/ me?? please help