[Luminess]

Okay please respond to this as best as you can because im really freaked out. I'm counting on y'all.

So me and my boyfriend had sex on October 6th and we used a condom. It was both of our first times. I got my period the next day and it lasted for my usual 4 or 5 days so I figured I was in the clear, but now I'm not so sure. I googled it and it said there's still a chance I could be pregnant. My period isnt very regular to begin with, but I never kept track of exactly how irregular because I wasn't having sex. If it were exactly regular it would've started 7 days ago so I'm considering myself 7 days late. All day for the past 2 or 3 days I've been having cramps in my lower back exactly like I get from my period, but they dissipate when I sit or lay down and there hasn't been any spotting. I'm very stressed out about it so that may be a factor as to why it's not coming but I'm not sure. Please give me your opinions and let me know what's the latest any of your periods have been? Im very worried.