I have a serious question that I have wanted to ask but never could because of being embarrassed today's the day tho 

Sometimes every once in a while I will put on a diaper and and poop in it and at the time I like the feeling and also get a feeling of likeness sexually in a small way I'm in my 40s and done this off and on for last 10 years about 4 times a year is this anything I should worry about?? Am I a freak?? I'm a normal person right?