Three days without Cerazette, chances of pregnancy.

Patient: I have been on Cerazette for the past 3 months having had a 2 month break from taking it.I am temporarily living in Germany, and i am from the UK.I usually take my pill at about 11pm- midnight, about an hour before i go to bed.I have left my pills at my boyfriends and havent taken any for three days now but i have had sex, this was sunday morning, and i have been without my pills since sunday evening (therefore i didn’t take any on sunday).Am i still protected against pregnancy? If i am not, how slim are the chances of getting pregnant from this?

Symptoms: I do not have any symptoms