21 Month Old Sleep Issues

Hey ladies! I was looking for a little advice. My 21 month old has decided for the past few weeks that she doesn't want to sleep in her crib all night. She wakes up EVERY night at about 3 am crying so hard. I'm 3 months pregnant myself so it's so hard to stay disiplined with her so I just get her out of bed and put her in the bed with us where she immediately goes back to sleep. I can't stand it anymore? Should I just let her cry herself back to sleep? Has anyone else gone through this???

My son still does that and he is 21 months too. He cries for a little bit and I go in and settle him down. I try not to let him scream too long, I have a 5 month old and a 3 1/2 sleeping. He usually will give it a rest and go back to sleep but there are nights when I put him in bed with me. So i'm right there with you.

my daughter is 20 months old, she slept well since a baby, then when we moved i think she was uncofortable and didnt want to sleep so we put her in the bed with us, big mistake, she then got a cold and i wanted her with me so i could keep an eye on her...after about a week of her not wanting to sleep in her crib i had had enough, so we put her back in the crib ad let her cry it out, now she knows that no one is going to get her and doesnt even try...? its hard to hear them crying but in the long run its better...