First time pregnancy scare! Help

I started birth control roughly 2 months ago. Pardon, but I'm going to get into detail! On july 26th - 28th, was when i was having intercourse; without a condom. Now, he NEVER came inside of me. I have no doubt he most definitely precame inside of me, though. I make sure to always take my pill right on time, a few minutes before (no more than ten minutes) or a few minutes after. This is my third week after intercourse, last week my withdrawal bleeding came. I haven't really had any symptoms that i feel should be noted.

I've been worrying myself to death; reading so many articles just hoping I won't end up pregnant the last 3 weeks. I'm going to get a pregnancy test next week, but in the meantime, really trying not to make myself sick due to stress I feel seeing / hearing words from other people outside of articles or my own head is going to help me. So please!