I had been for Student dependent visa interview on 20th April F2 , they asked me to provide additional documentation through drop box.
If I drop my passport with the required documents , they say it may take 3 to 4 weeks of processing time.

But my husband convacation is on May7th , Since I want to attend convacation , can I go on B1/B2 visa and then come back and submit the additional documents?

I had been to USA in Jan and Feb 2011 on B1/B2 visa , I had got permission to stay till June 2011.Will my re-entery within 3 months be a problem?