Pup has been such a good sleeper, but for the past 3 weeks, he has been waking in the middle of the night for a feed (no real problem with this as he goes back to sleep straight away) and for the past 3 nights, he has been waking anywhere between 30 mins and 1 hour after being put down for the night and is absolutely hysterical. Takes me 30 - 45 mins to calm him so I can get him back down.

I'm totally unsure what is going on as he has never done this before. It is now 8.45pm and we still haven't had our dinner because he started up and we can't get him back down.

Any suggestions?

He is crying like he is hurt, but I've checked his clothes, bed linen, nappy etc and nothing is poking into him. It is really starting to upset me.