Pregnant?

I had sex with my boyfriend on the second or third day of my period, we’d never done that before but my periods are really light & we were in a romantic setting outside of the country. Unfortunately, the condom ripped. It was nerve wrecking since plan b wasn’t accessible in the country that we were in. I got back five days later and took it in hopes that it would work although I had gone over the hours suggested. Now I keep feeling a weird feeling in my stomach, but it’s literally the feeling you get when you’re nervous about something, so it’s obviously most likely that, but you know how we get in our heads about everything. But I’ve also noticed that I’m extra emotional about random things.... I read that those are some potential symptoms. Anyway.... I guess I’m just writing to vent since I know that nobody can really tell me what’s going on. I’m 26, & have been with my boyfriend for a year and a half. We absolutely adore each other, but I’m currently succeeding greatly in my career, & I’m going to school for my PhD, so I really hope that I’m not at this moment at least not until I’m done with school. Although I adore children and can’t wait to have them one day, I’m hoping to wait until I feel like it’s the proper time in my life. So anyway, when’s the earliest that I can take a test? My period should be here in about 12 days. Thanks!