If you have had Covid-19 and also been immunised by one of the vaccines then you will likely have 'hybrid immunity'. This is very good news.
This is an excellent paper on the subject by vaccine scientist, Prof Shane Crotty. He's pretty much my go-to researcher for anything related to SARS-COV-2 as his lab is at the forefront of research.
Excerpts:
Hybrid vigor can occur when different plant lines are bred together and the hybrid is a much stronger plant. Something similar happens when natural immunity is combined with vaccine-generated immunity, resulting in 25 to 100 times higher antibody responses, driven by memory B cells and CD4+ T cells and broader cross-protection from variants.
What happens when previously infected individuals are vaccinated? The observations in several studies, including those by Stamatatos et al. and Reynolds et al., are that an impressive synergy occurs—a 'hybrid vigor immunity' resulting from a combination of natural immunity and vaccine-generated immunity. When natural immunity to SARS-CoV-2 is combined with vaccine-generated immunity, a larger-than-expected immune response arises.
science.sciencemag.org/content/372/6549/1392