Hi thanks for asking question.
You most probably have respiratory infective condition.
Do your complete blood examination test.
If
neutrophilia then bacterial cause, If
lymphocytosis then viral and if
eosinophilia hen allergic cause.
Start antibiotic for few days.
Mucolytic drug can be taken like ambroxol.
If blocked nose decongestn can taken like
oxymetazoline.
You have aggravated symptoms just because of EXCESS stress you are taking.
Your symptoms might be because of
panic attack.your intestine is not ruptured.
Avoid stress.
Regularly do yoga and exercise.
Endulge your self in some activity.
If still want to confirm ultrasound examination of abdomen and liver enzyme study can be done.
For heart problem detection you can do ECG.
Don't worry..
If still your respi symptoms not improving chest x ray done for further work up.
I hope I have solve your query