Sorry if I ramble on....DD2 is 15 mnths and ever since being ill in December with what started as bad cough/cold that came/went/came/went and ended up with ear infection in january her sleep pattern has been totally destroyed and she is waking at various times during the night. We always put her to bed at 7 and have good bedtime routine, she self settles in her cot with just a dummy and teddy so in theory should self settle again when she wakes during the night. But she doesn't...as an example on Friday she woke at 10 to 10, we ignored her for a few mins to see if she would drop back off but she started to cry and we could hear her moving around so I went in to her. She was standing up so I said "sleep time, lie down" (she is able to lie herself back down) but she started "bouncing" holding on to end of cot. I repeated myself and I laid her back down and walked out. Immediately she started screaming and stood straight back up again. She threw her dummy and teddy out of the cot so I put them back in and repeated again, sleep time, lie down and laid her down. Basically the screaming continued on and off (with very little "off"!) until after midnight...I offered her water in case she was thirsty, checked her nappy, gave her calpol in case she had teething pain but nothing worked. There were no tears, it seems as though she was screaming purely in temper and she ended up shaking she had been exerting so much effort. I hadn't got cross or raised my voice, in fact I'm proud of myself for keeping my cool! This pattern has been going on now since January and can occur at any point in the night, Saturday was 2am til half 4, then up again at 6am as though she'd had a full nights sleep. My DH, DD1 and I are all shattered and its causing stress on us as a family 
We have tried controlled crying with her, it didn't work, she just made herself sick; tried the "stay in the room and increase the distance you move away" theory, didn't work; tried the trick which worked with DD1 where you don't acknowledge them simply lie them back down and walk back out (only took 2 nights with DD1 and she slept brilliantly after that) and I don't know what else to do. Can anyone offer any advice please???
Also as another point she has started screaming during the day if she wants something and doesn't get it, and then throws herself backwards on the floor so bangs her head if I ignore her. I don't want to give in to her but equally don't want her to hurt herself. She doesn't like being told no but distraction techniques aren't working either! Starting to really doubt ourselves as parents 