Why do you think you might need an I-824? That form is usually required if the I-130 cannot be forwarded to the consulate, normally due to a mistake made by the petitioner (for example, if both Adjustment of Status and Consular Processing were selected). It sounds as if your I-130 is still within normal processing time, but I expect you to receive news very soon. If you needed an I-824, USCIS would notify you of needing it.