Birth control

Tianna

I take a lo Loestrin combination birth control pill because I’m less than 100lbs and any other pills I tried in the past made me extremely sick so my dr had to put me on a lower dosage. Today was the first day I let my bf finish in me and I’m extremely worried even tho I take my pills everyday at the same time. I skipped two brown sugar pills last month which should be okay and I’m on my 7th day restarting this new pack. Should I take a plan b just in case? Any advice or encouragement ?