Hello,
It seems that Doxycycline is not the right treatment. Please note that antibiotics, such as Doxycycline, are not effective against viruses and viral infections. They are given in order to prevent a viral infection to be complicated by a bacterial infection and usually, such treatment is based on the judgment of your physician.
Your doctor has prescribed you the right dose of Doxycycline. If your symptoms will not ease in 2-3 days, then you will need to change the antibiotic. It is possible that your disease is exacerbated by
Streptococcus, a kind of bacteria that has developed high rates of resistance to Doxycycline.
Therefore, your doctor might need to change the antibiotic for you, and suggest Cephalosporins for example. If the
fever is high (39 Celsius degrees or higher) and
cough persists or deepens, then you will have to see your doctor again.
The difficulties in swallowing could be due to the involvement of tonsils. Change of antibiotic will help ease these symptoms too. Gargling with salt water several times a day could help your tonsils recover and enhance the healing process. Also, please keep hydrated by drinking water and fruit juices.
Vitamin C (up to one gram per day) also will boost your body's resistance.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Ervin Toçi