Don't feel stupid about posting your number. We all make mistakes - just do what you need to do to fix it (ie changing your number), and move on.
I'm glad we're talking about our personal feelings on this matter - I'm new here, but definitely not new to the ab/dl interest. I've loved diapers and all things ab since I can remember, actually. Not that it's necessarily gotten any easier, mind you - my husband doesn't quite understand what I'm talking about (and probably won't ever indulge me in my fetish, considering he'd be the one to play the submissive role, for the most part), and, outside of him and a couple of good friends, I pretty much keep the matter to myself.
However, it must be said that I strongly feel that there is absolutely no harm in the ab/dl lifestyle. I'm amazed that more people haven't embraced it, frankly. Being able to let go of responsibilities, worries and care in favor of being cuddled, doted upon and adored - what could make more sense? I have long fantasized about having a male ab to love and tend to, and feel no guilt about that. I may never be able to live out that fantasy, but just the enjoyment of the thought itself is wonderful.
And yes, there was a time that I felt entirely alone - when I was in my early teens, the interest came back (it would come and go from when I was about 4 to about 23 - now I have accepted it fully), not only did I worry that I was totally alone in my desires, but I worried that I actually had pedophilic leanings. In my heart I knew this wasn't the case, but the whole infantilism thing just scared me. Once I came to accept (and research) my ab/dl interest, I came to realize that I wasn't alone, and that I was really quite normal.
Don't worry, Kinomi - you have nothing to worry about. This is a natural love that we all have, and is totally harmless. Just embrace it, and accept who you are with openness and calm. Best of luck.