Baby cries evrynight. What to do? She is 3month old. We are doing everything but she wont stop..

Crying. Does she cry during the day too or only at night? Does she stop crying when she is picked up, try to swaddle her, gentle rocking, soft soothing sounds, feed her , change diaper, a nice warm bath before she sleeps, all these can help calm her down, but is if she constantly crying & you can't comfort her, then call her pediatrician or get checked by her doctor. I hope she feels better soon.