Aw you poor thing. I have been having a similar problem daytime with my lo. I took her to a&e last night as she had gone from crying before bed to really screaming and not feeding very well. It turns out she has thrush in her mouth poor thing and that's why she couldn't feed well and hence not sleeping well. I took antibiotics and if you breastfeed it can cause your baby to develop thrush.
Check your lo for this, maybe it will help. Or if he's normally good, it could just be a growth spurt.