I have been on progesterone only birth control pills for a few month and I got my period yesterday. Due to scheduling issues, I decided to get a depo shot instead of taking the pills since I was having problems taking them at the same time everyday. I have 5 more days of birth control pills, am currently on my period and got my depo shot today. If I finish my birth control pack, am I safe from pregnancy or do I need to use other modes of protection for the next week until the depo shot sets in?