Renewing Expired H1B visa and going for H4 stamping


My employer is plannig to file for H1B out of cap, as my visa expired in May but used it for 2yrs & 8 months only
In the meanwhile am planning to get H4 stamped and visit my husband in the US for 2-3 months

Am not sure, if going for H4 will affect filing of H1 and if it all it is a valid scenario
If not, I will have to cancel my plans to get H4 not sure
Can you please advise