You are on H1 status now
Irrespective you got stamped or not you are on H1 status now. The moment your H1 application approved you status changed to H1 from H4.
If you are not working I mean if you are not on company payroll , then it is highly highly recommended to change back to H4, so that you will not have problem of \'OUT of Status\'
You may apply again for change of status to H4 or the quick way would be go out of country and enter with old H4.
By the way when did you get your H1.
Please confirm with your lawyer.