I have cough and cold for the past 15 days with breathing difficulty. What can I do to get rid of it?

Hi doctor,

I am suffering from a cough and cold for the past 15 days. In the past, I used to get cough due to acute pharyngitis, so this time also I went to ENT and got medicines, Azithromycin, CP Maleate, Cetirizine Paracetamol; after using these, I got some relief. But four days back, I went to a camp where I drank the service water in the night due to thirst. From the next morning, I am having a heavy cough and difficulty breathing while talking and walking. Today I visited my doctor, and she gave me the following medicines.

Capsule Amoxicillin Trihydrate 250 mg one tablet four times daily for three days.

Tablet Cetirizine Dihydrochloride one tablet once daily for five days.

Tablet Etophylline 77 mg and Theophylline 23 mg, two tablets twice daily for five days.

Tablet Prednisolone 5 mg. one tablet twice daily for four days.

Tablet Ranitidine 150 mg one tablet twice daily for five days.

Is there any serious issue with me? What should I do now?

Thank you doctor,

My doctor suggested me to take a blood test and x-ray for the chest. The breathing difficulty is mild only, and it is not severe. I am sending the reports of the blood test. Please check whether everything is fine. X-ray reports say that the lungs are clear. Today she gave the following medications for three days. I am sending them also. She said it is only an allergic cough. But now again, I am having a cough and noisy breathing. Current medicines:

Capsule Amoxicillin Trihydrate 250 mg one tablet four times daily for three days.

Tablet Cetirizine Dihydrochloride one tablet once daily for five days.

Tablet Etophylline 77 mg and Theophylline 23 mg, two tablets twice daily for five days.

Tablet Diethylcarbamazine Citrate 100 mg one tablet thrice daily for seven days.

Tablet Prednisolone 5 mg one tablet twice daily for four days.

Tablet Ranitidine 150 mg one tablet twice daily for five days.