I missed 3 pills in the 1st week of my bc pack 2 consecutive took 1 missed 1 I'm not having any breakthrough bleeding could I be pregnant?

Pregnancy possible. You need to use a backup form of contraceptive protection when you miss more than 2 pills in a cycle. Pregnancy is possible if you had sex during this pill cycle. Do a home pregnancy test 3 weeks after last sex in this cycle.