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You have a viral or allergic upper respiratory tract infection. Calpol and Combiflam (Ibuprofen with Paracetamol) both should not be used at a time. Use only one drug among these two as they are anti-inflammatory and analgesic. You can also take Vitamin C 500 mg twice a day for five days.
Do saltwater gargle with warm water three times a day. A decongestant like Levocetirizine can be taken additionally. Avoid excess spicy foods and drink more water. You can investigate your complete blood count (CBC) for further work up.