This thread involves frank discussion of human defecation and urination. Since this is a parents' forum I assume y'all can handle it.
My wife was helping her brother sell a bunch of baby stuff since he decided he's done. One of the items was a potty chair, and when my daughter, who's 20 months old, saw it, she wanted to sit on it. Didn't expect that, but I took off her pants and diaper and sat her down on it. Next thing I knew, she said "All done poop!" and she had pooped in it. Whoa! So we put her in some training pants and for the last three weeks it's been going great. She hasn't had a pee accident in probably two weeks, and she hadn't had a poop accident the whole time until five days ago.
Here's what happened. She had a poop that hurt, and the next day was afraid to poop. We had some of her cousins here and went to a playground, and she pooped at the playground. I rushed her back home, had her sit on the potty chair (where she peed), and showered her off. Not fun but you don't expect perfection. The next day, she pooped in the potty again - great! Except this one hurt again. The day after that, she refused to poop, and the subsequent two days (yesterday and the day before), she's held out as long as she could and then pooped in her pants before we noticed.
I know we aren't going back to diapers. She seems fully pee-trained and was good on poop too until recently. She is mentally and physically able to do it. She doesn't like the feeling of poop in her training pants, knows it's yucky, and wants it off as soon as it happens. I think she's just afraid it'll hurt if she does it on the potty.
Right now our strategy is not to worry about it too much, because we know she's able. We think she just needs one that doesn't hurt in the potty to get back on the wagon. So we're just resigned to a few gross days before we catch her at the right moment, sit her down, and she does it, realizes it doesn't hurt, and is pleased.
Any other strategies to suggest? We've been so proud of her progress.