Bedrooms

ok, so i have come to the conclusion that i need another bedroom, i am just not sure how to go around getting another bedroom. i currently live in a three bedroom house. theres is a nice sized family room that we use as a guest room when we have company. anyways, my mom has one bedroom, my son has the second, and my husband and me have the third. the baby in the begining is going to be sleeping in the same room as my husband and me, not such a big deal you would think, he's small so he can't take up that much room. right.....WRONG....currently, my bedroom has 4 book cases, a dresser w/ tv on top, and a large jewelry box. the closet is packed, and we still tend to lose things that we need because at one point or another they were removed to the shed for more room. i should also mention that we have the smallest bedroom in the house. which we didn't mind until the whole sharing with baby thing came up. now i am trying to figure out how we are going to fit the baby in here, it just doesn't seem like something that is going to happen easily, if at all. now i have thought about switching over into the family room, its a very large room, it was once upon a time the garage, and you would think that this wouldn't be a huge problem, but i can't convince my mom. it is her house after all, but we could move the entertainment section into the living room, and then turn what is now our room into the guest room/office, it really wouldn't be to big a deal, but for her it is. so i am stuck trying to figure out how my house is supposed to grow another bedroom. preferrably, a nice inexpensive bedroom, because i am quite broke atm. if anyone thinks they can help with this adventure please let me know. i would greatly appreciate it. if not, and you actually made it all the way through this post, then thankies much for reading, and i am sorry that i seem to have a lot to vent about at the moment.