Go to your Doctor ASAP!
Appendicitis
If your left side starts hurting does it mean your pregant?
It is possible that pain in the lower left quadrant of your back is caused by a kidney stone, since kidneys are located on both the left and the right of the lower torso. But there are other possible causes as well. Many things can cause pain.
Going into labor would cause discomfort in the lower left side of body.
Shingles
Because you are eating to much food and it causes you to throw up.
earaches? ear infection? instead of asking this website, maybe a doctors opinion would be better.
Please call your health care provider or local emergency room right away. They can give you advice on whether an emergency visit is needed. One-sided testicular pain can be an emergency. Please don't wait.
No member of this site can diagnose illness or conditions of a complete stranger. Nor should we. Advice at best can only be general and at worst may be detrimental. If you are concerned about any such a problem then you should see a doctor.
It sounds like he has some issues in his life he needs to work out, and thinks it would be better to deal with them without you.If he loves you he'll come back when he is ready.
lower back.
yes it could, but just to be sure go and see your doctor