Obviously name-changed, well, I made a whole new account just to be sure, this is a vile horrid situation 
I feel sick even typing this.
I was in bed with my H, in the middle of sex, and I shit myself. I'm not even ill, nothing like this has ever happened to me before, never, why now? It was runny... sorry... I thought it was H 'finishing', he practically ran from the room... oh god
he went in the bathroom while I was crying and cleaning up, he didn't say a word, and has walked straight out of the bathroom and out of the house 
I am now sat here crying my eyes out, mortified, humiliated, I feel sick to the pit of my stomach
I do not want him to come home, ever, I can't face him ever again. What if he thought I did it on purpose?! Why did he walk out? 
Help me, god, please, I am turning inside out with humilation
please tell me this has happened to someone else?? I feel like running away before he comes home because I can't face it. This is the end of my marriage 