Back muscle spasm causing struggling with movement. Shooting pain in lower abdomen. Difficultly taking a deep breath due to back.?

Is it muscle? Would definitely need more information for this one. When and how did it start, how long has it been like this, was there an injury, any nausea, fever, diarrhea, blood in urine? How does the muscle spasm in back explain the abdominal pain? Right or left side? You should see a doctor - if severe, go to the emergency room. If muscle spasm, use heat, ibuprofen, and gentle exercise.
It's possible. Back pain can be referred to many places and the back muscles in the thoracic area are connected to the rib cage which directly affects the breathing process. See the Dr. to get examined and treated for your pains. Get well soon.
Acute backstrain. Acute back strain may be pretty debilitating. Try NSAIDS like advil (ibuprofen) or motrin, heat or cold compresses during the acute phase. Back strengthening exercises will help to prevent this from happening.