I missed 4 pills in a row then called my doctor so I could renew my pack. They told me I had to try a new type so I did on the 5th day. I had breakthrough bleeding and since it was light I had sex with my significant other a few days and he ejaculated in me each time. I have been feeling tired and nauseas and my period is supposed to come in 2 days. What is the percentage that I will be pregnant