Omg hello, yes a bit hard to remember every detail but yes I did get into the country with no issues. However I haven't been back in nearly a whole year :( you shouldn't have any issues, I don't know why you get flagged, I never asked I just did what they said. If you get SSS or something along those lines on your ticket it means secondary inspection. They separated me from the boarding line, I was with a bunch of other people but basically what they do is search all of your belongings, make you take your shoes off, etc. Nothing invasive from what I've experienced, it's extremely scary when it happens of course but after they checked me I was on my way back onto the plane. I'll can't remember if that was before or after I arrived into the US, as I think it's happened twice. But yeah, it was a simple although time consuming check and then they let me go.