Prenatals while on birth control

When I had my baby my ob told me I could continue taking my prenatals while I’m breastfeeding but that was almost 4 months ago and I got put on the nexplanon implant 10weeks PP and forgot to ask if I can take my prenatals still or do a postnatal vitamin and it not affect my birth control.

Does anyone know if I can take the vitamins with my birth control and be good? I still have a bunch of my prenatals and I don’t want to waste them. Or is it already too late since I’m 4months PP? I’m EBF. I took them up until I got my birth control but I’m wondering if I can continue since I know the vitamins are good for me and baby

I’m trying to AVOID pregnancy which is why I’m on birth control but I know prenatals are good for breast milk