Has anyone else had this? I'm not talking about just needing the toilet a lot in the last trimester, and thus bouncing up and down to the loo, but proper not being able to sleep for weeks on end.
I'm 24 weeks now, and from 6 weeks pg, have been managing a max of 4 hours or so a night - normally we go to bed at 10, I will finally drift off sometime between 10+11, and then wake up between 1 and 3 and not be able to go back to sleep. (last pg it was from about 24 weeks onwards until DS was born)
Midwife said to see a GP if it didn't improve, GP said nothing she can do, speak to consultant, consultant said I could possibly use antihistamines occasionally, but she'd recommend that I don't.
I am BROKEN with exhaustion, have a 2.4 yo DS, and work 5 days a week too (not full time, thank god, but the commute is getting hairier by the day!).
I cannot drink any tea (makes me chuck, always has done), warm milk likewise, have tried horlicks/ovaltine/hot choc, warm bath, no caffiene in the day, no chcolate in the day (this one was VERY hard to do :o)
I think I'm starting to get SPD now too, so cannot get comfy at night, which is making it worse. Oh, and DS is a poor sleeper, so I never have a night where I can guarantee an unbroken sleep even if I do drug myself up. Antihistamines do work for sleep, which is great, but leave me very drowsy the next day (it's just zirtek, btw, 10mg, nothing crazy :))
Anyone who can advise a way to get some sleep between now and baby arriving, I will give you a 
:o