Friend's COS got approved despite Travel out of US. Worried about my status

Currently I am on L1 and have applied for H1b which is still under process. Last month I had a visit to my home country for 3 weeks. I read if you travel out of US when your H1B is in process, COS gets denied. Some of my friends were in same situation but their COS was approved. I am expecting COS to be denied. What would be my status if COS is approved.?

My wife is in India. Is it Advisable that I bring her here or wait till I get COS result.