Big hugs LS! I'm feeling like I'll be in the same boat shortly. My DD's sleep has never been great but she was actually sleeping all night recently, now she is waking up several times a night...I guess she is getting anxious about the new baby but it's pushing my buttons already. At 4am im wide awake and it's hard to be nice!!
If I remember correctly you are on your own a fair bit too? Does your DH work away? That makes it so hard as well. GBH