should I take a pregnancy test?

Katherine
Ladies I need some advice please! According to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> my period is 6 days late. However, this is my first month tracking and my periods have always been a little irregular. I also exercise pretty vigorously and have missed periods before but at the time I wasn't sexually active so there was no need for worry. I was on the pill but haven't been now for about 3 months because I hated the side effects, and my boyfriend always pulls out (I know this isn't the smartest and I've been meaning to start the pill again). What's really making me worry that something is wrong is that the other 3 girls I live with got their periods and usually all of our cycles are synced very closely. Should I take a pregnancy test or wait a few more days?? Will the results be accurate?