Hi welcome to the healthcare magic. According to history provided it seems to be upper viral respiratory infection.. Muscle pain can occur as a result of constitutional symptom and by low energy intake. Your work up done as follow... -Auscultation -CBC -ESR or CRP -Throat swab and ASO titre -If dark yellow urine and severe right hypochondrium pain present than usg abdomen and SGPT,SGOT needs to be done If wet cough present with excess mucus than ambroxol cough syrup can be taken For gastritis and abdominal pain pantoprazole tablet can be consumed Take vitamin C lozenges that is helpful in viral infection For congestion relief decongestant like phenylephrine prescribed Take lots of water If cbc show high count with neutrophiia thab antibiotic course prescribed If still no improvement than further work up will be planned .. Consult physician for examination with keeping all this in mind. Take care Hope your concern solved