Protected on first pill/placebo week?

Hi ladies! I had a question and knew I could turn to you all rather than Google. Tomorrow I come back home to my boyfriend after studying abroad!! I am on my placebo week right now and tomorrow will be my last placebo week pill. If I have sex tomorrow on my while on my last placebo pill and use a condom, will I be protected from pregnancy?

Also, I start my new pack of pills on Sunday. If I take my first pill on Sunday, will I be protected from pregnancy on Sunday even though it’s my first active pill of my new pack? Hopefully this isn’t too confusing :)

I haven’t forgotten any pills and take them at the same time everyday

**NOTE: I have been on the same combination birth control pill for a year now, when I say I am starting a new pack, I am still taking the same pill. Also me and my boyfriend use condoms when we have sex.**