It's normal to have these fears, I have four kids and with each one I had the fear of SIDS. I had them sleep in my bed and when they didn't I was constantly checking on them losing sleep for peace of mind it just comes with the territory I think. Especially being a first time mom, most things come natural others are a learning experience. I took my youngest to the park this morning and I was so hands on another mother asked me if this was my first child. I was a bit embarrassed but I rather be safe then sorry.