Travelling to India with H4 COS & H4 EAD application pending

My application is pending for H4 COS & H4 EAD. My husband’s H1B approval came. I received my biometrics appointmnet which is in the 1st week of march. I am planning to go to india after biometrics. If I travel to india what will happen to my application. I am eligible for dropbox facility. But without valid H4 approval, will there be any problem. If i get h4 visa stamped through dropbox, what about h4 ead. Do i need to fil again for H4 EAD when i come back to U.S

I would really appreciate if someone can share their experiences and suggestions. Thanks