Ds has been sleeping through the night (most nights) for several months now. He's 10mo. He hasn't woken to be fed at night since maybe 6mo, but sometimes just wakes up and I have to rock him back to sleep. No big deal, I just rock him for a few min and then lay him back down and climb back in bed with him. For some reason unknown to me, the past few nights have been absolute hell. The problem is he wakes up crying and when I pick him up and rock him and try to lay him back down, he starts screaming as soon as I lay him down. Last night I was up rocking and attempting to lay him down from around 1am to 3:30am. Then he woke up twice more before morning, though I was able to lay him down easier those times, it was still so frustrating. For some reason I have been even more frustrated with this than I was when it was happening many months ago. Maybe cause I'm pregnant, maybe cause I have just gotten used to getting decent sleep at night and now I feel like things are going backwards. Why is he doing this?? He's not teething, not sick, nothing is going on. When will it end? I feel so bad but I have been thinking about putting him in the nursery and trying to sleep train him or something. No flames, plz, I'm just at the end of my rope. I could really use some good advice.