WNT - so sorry you are so upset.
My 'is that you, WNT' was to acknowledge that you have indeed changed your name.
Oh all right, and becuae I couldnt' resist it!
I had colitis in my 20's - and was surprised how very badly it affected my self-confidence and self-esteem - so I do know how 'not like yourself' and horrified you must be feeling.
Once you have broached it with your Dr it will seem so much more easy to talk about. it's the intial deep breath and firts sentence that is hard. But a good Dr will help you talk about it. Could you make an appointment with a Dr you don't usually see at your practice, so that you willl never need to talk to them again?
And of course , a Dr will be able to help you get this sorted out, very quickly, so don't let yourself suffer any longer.
And meanwhile stuff your pants with whatever, wear a long coat, and take your DC to school. No-one can see what is going on in your pants!