Hi,
you poor thing i remember what life before co-sleeping was like. Unfortunately you have a choice to make. It is not an easy choice as many people will crticise you whichever option you choose. I will tell you our story and then it is up to you what you choose to do.

My DD is nearly one now and she has been co-sleeping from about four or five months of age. She was never a good sleeper i always had to feed her to sleep she always had to be wrapped and patted and carried etc. For a few months she slept in the pram beside our bed and a very short period in her cot beside our bed. I found that i was getting up to her numerous times overnight and spending over an hour trying to settle her into her cot and then she would wake up fourty minutes later. If she was in bed with us she slept through some nights and i didn't have to settle her as she feed whilst asleep.
I had numerous people tell me i was mad and they still do. I bought the book "Three in the bed", can't remember the authors name but it is a really good history of breastfeeding and co-sleeping and gives you lots of ammunition for the arguements you will have with your family friends etc.

When she was really little she slept wrapped and in the crook of my arm i woke if she moved so it was reassuring she slept under our blankets but i was super careful. At about six or seven months she stopped being wrapped and she slept beside me, we got rid of our doona and just use blankets. When she started crawling we got rid of our bed and now we have our mattress and a single bed mattress on the floor next to each other to give us more space. Some nights she sleeps for most of the night on the single mattress on her own and other nights she still sleeps in my arms. i am not pushing the issue in the hope that we will get more nights with her in the single bed as she gets older and eventually she will sleep in the single bed all the time.
Hope this helps