Basically - started 2.30am this morning, DS3 (5 1/2 months) woke up (as per normal). DH got up with him, he drank roughly the same amount of milk as usual but then wouldn't settle. Usuaally he'll either be put down in his cot awake, and go to sleep on his own, or he'll fall asleep in our arms and we'll then put him in there - either way he sleeps well (ie when he's slept through it's been using both methods of getting him to sleep).
Anyhow, after 1 1/2hrs DH woke me (as per our agreement, if he's been up for 1 1/2hrs+ and it's 4am (the time when I'm "on duty") he wakes me and I get up (he has to go to work, I don't). He'd not settled at all, kept dozing off in DH's arms (often with a lot of horrible high pitched screaming) but wouldn't sleep on his own in the cot. He gave him Calpol at about 3.30.
The same happened to me (except I didn't try with the cot as I appreciated that DH may actually have needed some sleep). Everytime I put him down he did this horrible high pitched screaming, and would only sleep in my arms, even then he wasn't sleeping for long, and sometimes was trying to sleep but was screaming and obviously not being able to.
He did eventually fall asleep (in the pushchair) at about 9.30, woke briefly at 11.40, but went back to sleep (no screaming/crying at all). I took him to get him weighed - and to talk to the HV (waste of time she was.....but that's a whole different thread) and he woke up about 1pm. Was ok for a while, but as I was getting him changed after being weighed did some more of the shrieking (even then the HV didn't think anything was wrong ). Went back to a friend's for coffee and he had some more milk (about 5oz - but the first he'd had since 5.45am!) and seemed to perk up a bit.
Stayed awake until about 3pm and then fell asleep going back home again. Since we've been back he's still been very sleepy, but when he's awake has (so far) refused any more milk - but just screamed. He's VERY sleepy (I'm about to give him his bath and put him to bed) and grumpy/shrieky when awake.
He looks a little pale (for him) but doesn't seem to have any other symptoms (poor little mite has been extensively searched several times today by me to check for rashes....). When he's crying it sounds like he's in pain - but he's not pulling his knees up at all, and he's pooing as per normal (plus nappies are still wet) so I don't think it's his tummy.
I'm veering towards it being teeth - but I can't see/feel anything and late teething runs strongly in both our families (DS1 and DS2 were 10/11 months when their first appeared, which is similar to me, DH, my DB and most of DH's siblings).....
Also, neither DS1 or DS2 really had any trouble when teething, they grizzled (a little) tooth appeared, they were fine.....so nothing like this.
Could it be teething - or could I be missing something??? Oh - and he doesn't have a temp either....