My baby will be 5 months old next week. She can roll over and has great head and neck support. We had a cloth bumper in her crib but took it out 2 months ago. Since then we've stopped swaddling her. Last night she bumped her head on the bars (we saw her do this on the monitor) and she started screaming. She's a wiggly one and is all over the crib. I'm planning on putting the bumper back in. I don't think she can suffocate but there's so much negativity around bumpers so I'm a little hesitant. I ask the pediatrician at her 4 month appt. and she said if they were that dangerous they wouldn't be sold. Thoughts?