DS was fairly easily potty trained at 2.7 months. He has weed in his pants probably once every 2/3 weeks since then.
I haven't got too stressed about it as he doesn't do full wees just a little then rushes off to the loo. He sometimes needs reminding, does the needing a wee 'dance' and I send him off to the loo.
But over the last couple of months it seems to be getting worse, he has 3 times fully emptied his bladder at the CMs while sat at the table for lunch after refusing to go to the toilet and it has happened a few times with DH. He hardly ever does it with me but I think I am more forceful, insisting he goes for a wee when I know he needs one and before we leave the house etc..
But today he has pooed in his pants at the CMs just before pick up. She couldn't change him as he had also wet himself earlier on.
I was so shocked because despite all the accidents with wees he has not pooed in his pants since the first week of potty training 15 months ago!!
He is not ill but was really distressed about it, crying and saying to CM "Mummy will be cross" 
Feeling awful about it, he obviously is anxious about my reaction?
I have hastily drawn up at reward chart tonight but any other suggestions?
He is still in nappies at night and is starting school in September. Has to be sorted by then.
Thank you