My joints pop way too often, sometimes painful?

For the past few years my joints have been popping. Especially my shoulders, hip and knees. They will pop even with the slightest movement and will pop seconds after it has already popped. Sometimes my shoulders will pop several times in five minutes. It doesn't hurt usually the first couple of times but they start hurting after about 4 or 5 pops (which is pretty much all the time). I am a 17 year old girl and my joints hurt me all the time. I am about 5'5 and i weigh about 135 pounds if it matters. When i stand up my hip almost always pops and may pop again within minutes. sometimes it hurts to walk on my knees and I limp a lot as a result of it. I'm not sure if it's related or not but my neck and back also hurts all the time and I can't bend over. It doesn't hurt to bend over but it hurts to stand buck up when i have bent over. I want my mom to take me to the doctor but I've been ignored because my sister has severe scoliosis and has to have surgery soon. (While writing this post my left shoulder popped twice and my right shoulder 3 times. I'm sitting down doing nothing but typing) Please help I'm miserable :(