I heard and felt my Bone crack in neck when bent head backwards to look up it was very painful is still move from side side. What has happened me?

It's possible that you may have injured a muscle, ligament, or joint in your neck, rather than a bone. If you are still able to move your neck from side to side, it is less likely that you have broken a bone. However, it's always a good idea to seek medical advice to determine the exact nature of the injury.

Here are some possible causes of your symptoms:

* Muscle strain: A muscle strain is a tear or overstretching of a muscle. This can happen when you suddenly or forcefully contract a muscle, such as when you bend your head back too quickly.

* Ligament sprain: A ligament sprain is a tear or overstretching of a ligament, which is a tough band of tissue that connects bones together. This can also happen when you bend your head back too quickly.

* Facet joint dysfunction: Facet joints are small joints that are located between the vertebrae in your spine. These joints can become irritated or inflamed, which can cause pain and stiffness.

* Cervical spine instability: Cervical spine instability is a condition in which the bones in your neck are not properly aligned. This can cause pain, stiffness, and weakness in the neck.

If you are experiencing persistent pain, stiffness, or weakness in your neck, it's important to see a doctor to get an accurate diagnosis and appropriate treatment. Here are some tips for managing neck pain at home:

* Apply ice to the painful area for 15-20 minutes at a time, several times a day.

* Take over-the-counter pain relievers such as ibuprofen or acetaminophen.

* Rest your neck by avoiding activities that aggravate the pain.

* Use a soft collar or brace to support your neck.

* See a doctor if your pain does not improve within a few days.