Hi, my 7 month old has always been a good sleeper and goes to bed at 7pm with not much problem. Recently she screams for hours no matter what I do. She had an ear infection last week but it didn't really affect her sleep. This week I went back to work full time, have been part time for a few months. She has been fine this week but Wednesday and tonight have been a nightmare. I'm at the end of my tether last night I gave up and went to bed early and got her in bed with me. She went straight off and slept all night. Help?