I always said that I’d never co-sleep, even though I had friends that did so and highly recommended it. The first night I brought my oldest home from the hospital, I held/nursed her until she was asleep, and as I eased her into her Pack-n-Play, she woke up screaming, as if to say, “It’s COLD and LONELY in here!!!” After a few more tries, I finally caved at around 3:00 a.m. I explained in a whisper to this brand-new creature, sleeping peacefully on my chest, “okay, I’ll still hold you, but Mommy REALLY needs to lay down.” She woke up between me and my husband the next morning.
Fast forward two years: I was pregnant with my youngest, and was tired of my oldest kicking me through the night. For her 2nd birthday, we surprised her with “a princess bed,” a twin-sized bed in the corner of our bedroom (it’s large enough to accommodate it). It took a little convincing/laying with her to go to sleep, but eventually she got comfortable sleeping a few steps away.
When my youngest came along, her noises and sleep patterns disturbed my husband for some reason, so instead of sleeping between us as my oldest did, I put up a bedrail on my side, and put her between me and the rail. She was in our bed a bit longer than her sister, but when my oldest transitioned to her own room (at around 5), the little one took over the twin in our room. They still come into our bed now and then, if they’re cold, have a bad dream, or just want to snuggle. Some nights we even end up four-across. :-)
I nursed both of my girls long-term, so co-sleeping made it MUCH more convenient, and I got much more sleep than I would have, otherwise. I was also much more comfortable co-sleeping, in case they were sick in the night. . . I was right there. I’d also like to make note that both of my girls were premature (one was 6 weeks early, the other was 5), and it was so reassuring, if I stirred in the night, because I could hear their soft breathing and feel their warmth.
Dr. Sears is a proponent of co-sleeping, and here is an article where he answers some questions, and gives the common guidelines on how to co-sleep safely.
http://www.parenting.com/article/Baby/Health/Ask-Dr-Sears...
On several occasions, I was asked, “aren’t you afraid that you’ll roll over on her and squish her?” My standard reply became, “Every night when you go to bed, aren’t you afraid that you’ll roll off the edge?”
Motherhood is a matter of instincts, so go with your gut!