i m on h4 with my h1b visa approved and travelled india


I am currently in US in H4 visa and have my H1b petition approved. Now I am planning to visit India for vacation.

Meanwhile my husband had changed companies while in US, so when in India we will have to go for H1b stamping as his company has changed.

My question is :

1. Can I get H4 stamped again on my passport when I have a approved H1b visa petition?

2. If I come back on H4 is there anything I need to do after reaching US with regard to my H1b petition