Can i travel to india on H-4 once my H-1 B get approved

USA H1B Visa
1

1.I am on H4 visa and applied for H-1 B this year(Regular category).It got picked in lottery and

I am planning to go to India after the petition is approved.

Assuming I get my Visa, Can I travel to India on H4 and come back on H4. (probable dates are in between august 1 st to august 15th and return back to US before October 2014 ) .

 

2.I have my H-4 visa till next year march 2015,Will I face any issues ?do i need to go for stamping for H1B?or H-4 B ? If I need H4 stamping Will my H1b remain the same and automatically be activated in October  2014?

Thanks in advance ,Pls suggest ...
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If your H1 was applied with CoS then it should be ok to travel to India after approval and come back before October 1. But better check with your employer.