Pregnant on the pill?

I have been on birth control for nearly 2 years now, but switched from Junel to Microgestin 2 months ago. My boyfriend came inside me on the second day of a new pill pack...my period is supposed to come in a few days since this week is the placebo pills. I haven’t had any early pregnancy symptoms and take my pill at the exact same time everyday (give or take 30 mins) but am still super anxious I could be pregnant. Should I even be this worried??