Abdominal bloating is very characteristic symptom of irritable bowel syndrome.
If this symptom, along with lower abdominal pain, urinary symptoms, excessive tiredness, is accompanied by changed frequency and form of stool, than the diagnosis of irritable bowel syndrome is very possible.
Stress, anxiety can trigger symptoms of IBS.
Actually, stress and IBS tend to co-exist in same patient.
Viral sore throat is very frequent disease, because they can't be prevented (these viruses are commonly found in the environment)
Also, stress lowers the immune system leading to greater chances to get common infections.
Stomach pains that may awake you during sleep can be indicative for duodenal peptic ulcer.
Talk with a gastroenterologist!