My 18 week old breast fed son has always settled well at 7 until his feed and change at 11. He was sleeping till 5 or 6 then off again till we woke him at 7.30. In the last 2 weeks he has been consistently waking at around 10.30, 2.30 and 5.30, he seems to be whimpering a little and is perhaps in pain with teething. I'm wondering why he is waking at the same time every night. Is there anything I can do to settle him as Calpol ain't cutting it? I accept we have to ride it out but it seems like such a backward step and we're both exhausted!