Thankyou everyone for your support. She ended up just being wide awake again so we gave up for a bit. No point killing our arms rocking when she's wide awake staring at you. So she played on the floor in the lounge room laughing and rolling around for a while Then when she was tired again we started to put her to sleep. And found she had a dirty nappy OMG, hope that wasn't the problem the whole time!! Anyway, she's just gone to sleep in DHs arms.
Great, just heard him try and put her down and she's crying again, awesome.