Sorry, long post warning ahead.
I can totally relate to your potty training isues. My DD(5) is PDD-NOS. I tried to potty train her last February right before she turned 5 and I had the same problems. She would hold her pee and poo until I put pull-ups on her for bed or for running errands to the store. We did get her to pee on the potty some but she preferred the pull-ups because they are just glorified diapers.
SO, this past June after school was out I made a bigger committment to the potty training. First off, no pull-ups, no errands, no distractions, no compromising were my mantras. I only did errands when my husband was home or I sent him for groceries or asked neighbors to pick up emergency items on their trips to the store so that I would not have to worry about her peeing in public. I also racked my brain for an incentive and remembered what her teacher had told me that at school they try to capitalize on a child's strengths to help overcome their weaknesses. My DD is very visually oriented and is always interested in everything she can see. I went to the store and bought small peepee prizes and larger poopoo prizes (little animals, candy bars,balls, cars, etc. from Target,
Walmart, and the dollar store) and I wrapped all the peepee prizes and put them in a peepee prize bag and then I put the poopoo prizes in individual "prize bags". Because she could not see the prizes, she would be more motivated by the unknown. If they know what the prize is going to be, they will weigh the options of completing the task against the value of the prize.
I started potty training by explaining that today we throw away all the diapers and today she will be a big girl like mama and her sister and make peepees and poopoos on the potty. (I made sure to remove all diapers, pull-ups, and wipes from her sight and show her the new drawer of big girl panties) I only let her wear panties and a shirt. The first time she peed on herself she cried (good thing) and I cleaned her up and showed her the peepee prize bag explaining how to get the prize. I gave her lots of juice, waited an hour, and sat her on the potty. She peed and got her first prize,(she was very excited) The next time, she wet her panties some and some in the potty...no prize. ALL has to be in the potty for prize. (she cried--good thing) The peepee prizes ran out after about 4 days but by then she didn't always remember them anyway because I would start to wisk her away for "fun" handwashing.(letting her play in the sink water with toys) Over the next week she became 80% potty trained and stayed that way for about a month. She had an accident every 2 or 3 days either on the bathroom floor or in her bed at night. (I just keep a waterproof mattress cover on her bed and wash all the bedding if she wets) For nighttime, I have found to restrict her liquids giving her no milk products after 5pm and only sips of water after 7pm and that has drastically cut down her peepee accidents overnight. She is now 100% for daytime and 90% overnight.
As for poopoos...took much longer. She would poop in her panties some times 3 a day or she would hold it for a couple of days. After a week and a half...I had enough. I realized she was scared to let go of her bowels on the toilet. After she held it for 2 days (please no flames), I took her to the bathroom for peepees and when I went to wipe her I asked her to bend over all the way and touch the floor...then I gave her a liquid enema. Yes, she cried and whined on the potty for 10 or 15 minutes that it hurt and after much reassuring that the hurt would go away after she put her poopoos into the potty...walla--poops in the potty. She got her first poopoo prize. After that, she would start to push the poops into her panties but then go to the potty to "finish" but didn't get another prize for 4 or 5 days until it was all in the potty. She has had no poopoo accidents since that week.
Although I still have to wash her wet sheets once a week or so and wipe her after toileting, I consider it a success. Just hang in there. If need be, take a 2 week break and start over fresh with her. Good luck
