If you previously received an mRNA vaccine then you might want to consider waiting to get a booster until the Novavax vaccine is approved. It uses different technology and we expect that the combination of two different vaccine types will likely produce a wider spectrum of immunity. But there's little hard data on that so far and you shouldn't take this as medical advice.

https://www.nejm.org/doi/full/10.1056/NEJMoa2107659