Hi, Dream when DD is like this it is usually linked to her being ill or recently ill. I take her to my bed or a darkened room and cuddle until she has relaxed then pop her down, sometimes I need to pick her up to cuddle and reassure a few times but eventually she goes to sleep.
Now this works better ime than leaving to cry, as if she gets really worked up and miserable then she won't settle at all. Also, I hated the idea that she thinks I am going to just walk off and leave her, and have her feeling insecure.
I had a really hard time getting her into a good routine, and tried all sorts. Gentle, and least stress for her works and then for some reason she just slept easier and easier. Now she goes down without a peep.
At your DDs age DD was having two naps, usually sometime between 10-12 and then about 3pm. I also put her to bed at about 8pm which seemed to work best for some reason.
She also has a music box thing with a gentle light and lullabies that she adores and helps her drift off.
I also didn't feed her to sleep, I fed her after dinner and then that was it until the morning. Initially DH would then put her to bed, so Boob wasn't a feature of her bedtime routine at all, and that really helped with her sleeping.
I hope that makes sense and I know the approach it isn't everyone's cup of and tea. I hope things get better :)
Oh also a karvol vaporiser is fantastic when they are snuffly, best money I have spent tbh!
Looking forward to the scanathon, I wonder if it will reveal more twins??
And congratulations Jazzy nice to have a newbie, and cramping is normal mine was so painful I would have to catch my breath, but my Boy (squee! still so excited) is 22+2 weeks. Your corpus luteum is quite often to blame :)