Talk to Gynecologist on Contraception

Salam- I am 30 year old female-my husband is coming home after 1 year as he works abroad, and we will be staying together for a week from 25 to 3rd July now problem is we donot want pregnacy right now till I go abroad with him. He will be going back after 1 week. Please guide me best birth control pill (1 time or 21 day cycle) that will help to prevent pregnacy plz suggest name of medicine and how to take jzk Allah. Last period came on 8th June and have some spotting since last few days. Period cycle is irregular due to pcos problm. Thx.