I have sore breasts, cramps and other symptoms. I had breakthrough bleeding at the time of my period due to missed pills. I took a test a few days after my missed period. People say you should wait a week to test. Do you think I could be pregnant?

Anything is possible. You should of ran pills back to back though if you missed pills within 7 days of your break period. Or else if your on your week break you are still not protected now till you take 7 days of pills. It's very common to spot if you miss pills.