A trigger law is a law that isn’t currently enforceable, but certain changes in circumstance could “trigger” the law to go into effect. Some states have laws that will go into effect if Roe v. Wade is overturned or sufficiently weakened; in some cases these state laws ensure abortion access, but in most cases they restrict abortion..
Research whether your state has trigger laws that would restrict abortion (Guttmacher keeps a summary of state policies that would apply in this event). If it doesn’t, work to change that. Here is an outline of ways to work for legislative reform.