this is not the best advice because it's against what EVERYONE said to do (be patient, don't force, they'll do it when they are ready, etc) Well, I'M READY!!! uggghh, potty training is the WORST part of parenting so far, absolutley horrible.
anyway here's what we went through. my daughter just turned 3 and we've been trying since she was 2. I put her in panties and reminded her every so often to go potty, we sat and sat and she never went. She cried, screamed, we read books, sang songs, painted her nails everything I could think of while sitting on the potty. She watched mommy go, I got stickers every time I went. I would do this for 4 day increments and if there was no progress I stopped because it stressed me out so much! I did this 3 times over about 8 months and she never went on the potty once!
Finally afetr she three I decided that was it and I was forcing her to go. i knew she had to go at least once so I could then praise her and reward her for going, but I could never get her to go! just accident after accident. So I got the potty out and sat her in front of the TV and wrapped her up in a blanket to prevent her bare bottom from getting cold. over 2 hours later she had gone and It was a huge event in our house! so much praise and love from that and of course, stickers :)The next day, when I knew she had to go again I sat her there again and it took 3 hours. From then on it only took a few minutes. Then I moved the potty back into the bathroom and then later had her go on the big potty. She hasn't had an accident since (2 months ago.
I had a page up on the wall in the bathroom with my picture and her picture and I got a sticker when i went potty and i clapped for me and when she went she got it. I think her seeing me get rewarded helped.
I hate when people say, "they'll do it when they are ready, just give it time." Because a couple generations ago kids were potty trained at liek 18 months and now we have 5 year olds that aren't. You may totally disagree with me, but out of my frustration I had to "force" her.
Sorry if this doesn't help you. good luck, I know it sucks so bad!
M.