Lady_neon, we had a terrible week just gone, too - After 5 nights of an absolute minimum of sleep for me, and only a little more for DP, we were the same, snappy and grumpy and feeling like we'd tried everything and nothing was making a bit of difference. (Thor was also sleeping fine during the day, at this time.)

I rang Ngala, and they really quickly came to the conclusion that it was probably abdo pain from eating his solids at dinner time too late. We've reshuffled the eating schedule, and that very night, things were back to his normal routine of waking twice for feeds but going straight back to sleep afterwards. Three normal nights later, i'm convinced that they were right. Yay for Ngala! Let me know if you want more info on our suggested schedule, or otherwise, give them a ring yourself. They've always been totally lovely, and given me really useful, practical advice.