First of all do not panic and relax, becz if u panic u would make wrong decissions.
Here what I am understanding by u, correct it if not true
1. You Got Married in US and registered ur marriage in US
2. Your husband filed his 485 as principal and ur 485 as depandant, u signed on ur petition.
3. You left U.S while u have ur 485 pending here, without getting Adv parole?
4. You are currently in ur home country (assuming mexico or other country).
5. You both received an interview call to be appeared inside U.S .?
The most important thing I am assuming that you can Enter in US somehow even u left without Adv Parole, is that correct?
If it is so do not wait one more day to re-enter , immidiately come here in U.S and apear in interview with ur husband, becz as depandant they won't bother u nor dening u if u husband case is approved (May God approve u both

) and you would also get approval without any issue once they apporve ur husband.
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2nd route
If u can't manage to be here (Try to be here in US on interview time in any way u can come). if u can't come here than u have only one route left in choice and that is FTJ using 824 after ur husband is approved and he file.
is that answer ur concerns?
Wish u good luck