newborn bassinet, mom trouble sleeping

delivered at 36 weeks, healthy little girl and I am one of those moms that worries about anything. I lay on my couch with my baby close to me in her bassinet, all swaddled and cozy. I need my sleep. but even while she sleeps and makes little squeaks here and there, I still cant let myself sleep. i want to keep my eyes on her and make sure shes ok l, breathing ok, mot spitting up, not rolling over, just everything. help! I know I need sleep and should when she does too