I caught covid right after my first dose, when should i get my second dose?

The infection will be considered as a second dose so you should wait for at least 6 months. If it was me, I would ask my doctor for antibody test 6 months after the infection and then get advice if I should to get the booster. We all know now the current booster does not protect you from re-infection.

You can get your second dose after your 10 day isolation period is over or when your symptoms resolve, whichever is longer. The antibodies produced after a Covid infection do not appear to protect you as long as what is produced from a vaccine. If you get Covid after you are fully vaccinated (14days after second dose), you are much less likely to require hospitalization or risk severe disease.