paranoid about SIDS?

Brianna
Okay... so it's my 6 month olds second night in her crib in her own room. She's been in a rock & play sleeper next to my bed since she's been born. I'm SO paranoid she's going to pass away from SIDS. I can't sleep because I'm constantly getting up to check on her. When she was born she was in the NICU for 9 days because of my prolonged labor, she had respiratory distress syndrome. She's perfectly healthy now with no problems at all. Can someone please ease my mind?! I'm going crazy with worry. (Also, she has to have a small blankie to sleep. She pulls it to and from her face all the time, it soothes her. It's a little square blanket that's silk on one side. This might be adding to my paranoia. But she CANT sleep without it)