What could cause headaches, sore throat, rectal burning sensation and bleeding in a 24-year-old male?

Hello doctor,

I am a 24-year-old male and I have been unwell. I live in away from my home in another country and four months ago I visited my rural home and there I got the flu which lasted for a few days. It was accompanied by a dry cough that lasted for weeks, at first I thought I had contracted HIV (human immunodeficiency virus) so I went to get tested and the results came out negative which was a relief for me. A few weeks later, I started to have a headache and my body was shivering so I went to see a doctor and was tested for malaria and sugar levels. The sugar levels were fine and I was given malaria medication and antibiotics which were all finished by me but I still have the headaches and flu-like illness in the salivary gland area, it is not swollen and I produce enough saliva, my lips stay dry though and the headache would not go away. I feel like my throat is sore but not really and nothing feels blocked in my throat. I was taking Ciprofloxacin (Cipro) pills and Roxithromycin (Acevor) antibiotics and also Artemether (Coartem) for the malaria but on the prescription paper, there was Diclofenac (Cataflam) written which I did not buy.

Now I have a burning sensation in my anus and it is been going on for days now and I am really worried and not sure what this could be. I passed out feces today and as I was wiping the anal area I noticed a little blood on the tissue, must be from pushing the feces out too hard.

Thank you.