You know how sometimes you get stressed and want to be left alone -- reckon it's the same for babies. It's not as if baby rejects all your cuddles right? If baby is super stressed, give her some space. Babies can recognise their mommies' voices at 1-3 weeks so maybe you can soothe her using your voice, by singing or speaking to her. When she has calmed down, the cuddles can resume :) Don't worry too much about it.