Well, she could be going through a growth spurt, which would explain the nighttime wakings. How long has that been going on? If it's just a day or so, make sure to feed her a little bit extra during the day and do a dreamfeed to see if that makes a difference.
Also, has she passed any new developmental stages (sitting up, rolling over) or maybe teething? These things may be reasons for the nighttime waking, though it's most likely a growth spurt which would mean she needs more food.
As for the crying whenever she is put down, are you sure she's crying and not whining or doing a mantra cry? That could be her way of trying to settle herself into sleep. Since you did the swinging in order to get her to sleep in the past, maybe you missed the fact that this is one of the ways she's able to 'unwind' in order to sleep. My DS whines (or sometimes cries) just before most of his naps because he draws in so much when he's awake that he exhausts himself mentally and physically.
If she's doing the mantra cry, let her do that for a little bit while she's trying to settle into the nap. If she's out-and-out bawling, I'd suggest the pu/pd method as discribed in Tracy's sleep interview. Before you start that, though, I'd suggest you get a 'game plan' together to make sure (1) your consistent in your approach and (2) you and DH are on the same page and both doing the same thing.
A few more questions:
- What is your DD's temperament? Sounds like maybe touchy or grouchy?
- Are there other 'accidental parenting' things that you are trying to break concurrently? (for example, you mentioned you don't feed her before bedtime; did you break her of that habit before or during the attempt to break her of the swinging-to-sleep?) Breaking the nurse-to-sleep habit is very hard on certain temperaments so you want to make sure that is done before working on anything else (my DS STILL wants to nurse; that's how I know he's ready for his nap... his head makes a beeline for my bustine. :lol: )
I hope you're able to get a little more sleep tonight.