Is there something wrong with my baby?

My oldest shared a room with us until he was almost one, and we had many of the same problems. We eventually just had to take a couple of nights, and let him cry it out. We did our normal bed time routine (if you don't have one, nows the time to start) and then put him in his crib, then we let him cry for about 5-10 minutes at a time, then one of us would go in, pat him on the back, until he calmed down, Don't pick him up or talk to him, just a few little pats should be suffiecient. After he's stopped crying, leave the room, and do it over again. It will take awhile, it will be heartbreaking, as I could hardly stand it, but it's what's best for them, they need sleep. IT's not good for them to wake up so often. He will wake up in the middle of the night as well, you should repeat the same process. Don't feed him after his bedtime(unless you think it's a growth spurt), he's old enough not to need a feeding in the middle of the night. If you notice he's waking up at the same time each night, (or around the same time) it's problably just become habitual, and it will take a little time. It took about 2-3 days of us doing this with our son, and he still wasn't the greatest sleeper until he got his own room. Since this isn't an option, you will just have to do what you can. (have you thought of making him a little corner in the living room? or would he be disturbed by waking siblings/parents?) Good luck to you. I hope you have success. As important as a good night sleep is to you, it's much more needful for your little guy.

I disagree that crying it out will help. Is he having nightmares? Is he wetting more at night than during the day? What's his diet like? Is he pretty active during the day? Is co-sleeping not an option for you?