Help 10 month old wont sleep at night?

I have been feeding since day one and co-sleeping with daughter. She takes a bottle all day now, but usess me as a pacifier at night. Sometimes she will still eat at night but normally its more of a suck like a pacy. She never has taken a pacy and I have tried several tiomes and all kinds. She is teething now and so she sleeps like maybe an hour during the day and tosses and turns all night. I am lucky if I get 4 hours of sleep and its more like a really light sleep. So I am tired and run down all day with headaches and a 3 year old son to keep up with too. I dont know what to do. Please Help!!! Thanx