So Frustrated

Sorry, no cute pics to go along with this blog. I'm so discouraged and sad. Natalie was always such a good nap and sleeper. Lately, she's up 3-4 times a night, takes hours of screaming to get her to sleep or to nap. We've gone to the doctor to see if there was anything wrong (ear infection or whatnot). They say nothing. I'm typing this with earplugs in. I feel so bad that I'm so frustrated with her. I feel like I am ignoring her while she lays in her crib and cries for what seems like days. She was sound asleep in there at 9am for a nap, and up screaming at 9:15. She's clean and fed, I don't know what could be wrong. So now it's 9:45 and she's still crying. I have gone in 2 times to pat her back and give her the paci back. I'm in tears. Ryan and I are always fighting because I'm so tired from getting up all night and not getting rest during the day. All I'm hoping is it is this tooth that is slowly coming out on the bottom. I feel like a failure at this 'job'. I just don't know what to do. I have tried several things: routine, sleep positioner, swaddle, lights on, lights off, music on, fan on...nothing seems to make a difference until I finally just nurse her to sleeep. So Ryan's no help there either because she screams the whole time he tries to get her to bed. I know she's tired, she's rubbing her eyes like mad. I know this is such a ramble, I just had to get it out.