Hi all,
Zombie and Penguin, glad to hear things to be on the turn for you, that's so great. Hope things continue to improve.
Sycamore I'm sorry to see things are going so great for you, really really hope that changes soon 
Welcome Bear
in answer to your question, my DD is now 22 weeks and the regression began at about 13.5 weeks. We have had 1 week today of cc and I can highly recommend it if you feel comfortable enough with it. Reading the details I swore I'd never do it, but I actually think it's saved my life.
So things are still continuing to improve. Most nights DD has 1 or 2 wake ups for feeds. I just put her down wide awake in the cot with a kiss on the head and 'bedtime' then walk out, she does so so well self-settling, a quick chat to herself then shes off. Naps are pretty crappy most of the time with about 4x 40min naps. I can often put DD down now with minimal or no crying. When she does have a bit of a whinge I know it's just because she's tired. She is SO much happier now and I'm really enjoying our time together
She's just entering a Wonder Week and she's been all over the place today but she's still smiling away.
Can you believe that despite these improvements I still feel really low
I feel that I can't be pleased but I just can't help the way I feel. It doesn't help that I'm due to talk to my manager next week about my return to work. I feel sick thinking about it. DP puts me under a bit of pressure to return but I get so stressed thinking about it as I absolutely HATE my job and those I work with who made it quite clear when I announced my pregnancy that they feel that same way towards me. Just dreading it. I think I'll make an appointment with the GP next week 
Hope everyone is having a good day.