Hi I Missed My Pill Completely At The Start Of

Hi

I missed my pill completely at the start of my Rigevidon pack. I didn't take it the next day. I then forgot to take it again towards the end of my pill packet and again didn't take it at all. I've had unprotected sex from the day I missed the first pill. What are the chances of pregnancy? I've had bad cramps and been spotting. I took my pill from Tuesday till yesterday after missing Sunday and Monday's and the one at start of packet.