H4 travel guidence

[nanuu]

I am on H4 and my visa is stamped till sep2016....After reaching back from India to USA , my husband switched two companies....
with first A company he got I797 approved till Sep 2017
and with B second company he got I797 stamped till June 2016

I also have I 797 document from A company ... but I don't have from B comp. I am in India right now and wnt to travel back to USA

Please tell me do I need to go for stamping ? or my existing stamping will work for this travel and I can show my husband I 797 document but its till june 2016 only, less then 6 months from now ? Please let me know'

Thanks

[immihelp]

As long as you have a valid (unexpired) H4 visa stamp in your passport, you can travel to the US.