I was having lower abdomen pain.

I was having lower abdomen pain low grade fever and 3 teeth abscess infection pain so did urine analysis and urine routine test was normal but usg scan should one large ovary and 3.6mm kidney stone so gynoclogist gave doxy 100mg twice a day for 7 days .. I took it for 6days ..today morning I got fever again 99.8 temperature and body chills ... I talk to gynecologist abt my fever today she told me to go to dentist ... Pls advice why my fever is coming again and again ... I have got little pain in my right nostril today and right side upper and lower jaw tooth pain is there from one month ...im 6 weeks covid positive .. 4 weeks back I had got face sweeling so did a ct scan of my upper jaw had tooth infection... Im very worried and confused bcs my fever is reaccuring from 11 days ... Is it bcs of tooth infection or any other prblm like black fungus or other problem?... Pls advice im very stressed