How to create report which includes records of current month and last 7 days of previous month.

Hi Experts,

I need to create a report which includes records of current month and last 7 days of previous month.

I will get records of current month by this formula :- month({PROBSUMMARYM1.OPEN_TIME})=month(currentdate)

Please tell me how to add the records of last 7 days of previous Month for the same report.

Thanks in Advance.