Should I get varivax after delivery?

Depends. If testing shows you to have no evidence of immunity it would be good to get the vaccine. As an adult, if you had the wild disease it can be quite nasty & produce a lung infection that is quite serious. If you had it during a future pregnancy it could affect the baby even if your case was mild. If you had it near the time of delivery, the baby could develop a fatal case of neonatal varicella.