Michelle, maternal instinct is nearly always right. Good for you for going with it.

I still co-sleep with DS sometimes. Obviously if he starts climbing over me and wanting to play then he's on his own again! But you can feel the baby relax and the sleep is so much calmer. I, too, started co-sleeping because I was falling asleep feeding and decided that it was (a) easier and (b) a lot safer to plan to do it than to just fall asleep sitting up in bed holding a baby. Or on a sofa during the day. I had pillows and duvets, which isn't recommended, but you have to be aware and move the pillows away from the baby (a bit of hassle when changing sides) and consider blankets rather than duvets, which meant we were both freezing, so that stopped - although DS's head (and usually his neck, shoulders and arms) was never covered.