Persistent Low grade fever. Fatigued.

I got reinfected with covid again in April. The symptoms remain mild but even after 1 month of symptoms I still get low grade fever and pain in limbs. Fever is normal in morning rises through day but never goes past 99.6-99.8 and then comes back normal at night. This phenomenon still persists. I do not take paracetamol for it. I have had 2 CT thorax scans in 2 weeks and both came normal. I have had CRP, Dimer,LDH, Ferritin etc well within the range. I have had my CBC today only. The RBC comes at 4.31 (Slightly less) but doctor was not concerned about. Whenever I have fever I do get dizziness in head kind of dull headache and fatigue. What can be issue. I try searching online out of sheer anxiety and all I stumble upon blood cancers. I wake up in the morning with limb aches with 98 body temperature at 7 am. With time at noon the temperature rises till 99.8 with dull headache and again in the evening it starts declining and by night it again comes backs to normal. But I feel fatigued.