I've been pregnant three times in my life. My first pregnancy was the one that I "knew" right away. That was a before my period test, too. By 7 weeks I was forgetting my car keys on grocery store shelves. Breast tenderness didn't start immediately, but within the first month. I knew fairly quickly with my third, when the morning sickness overcame me a few weeks into it. I was also married and trying to conceive. "They" say it takes a couple months off the pill, but "they" were wrong.

Have you considered birth control, if this turns out to be a false alarm? I only had 1 worry moment back in college with my long term boyfriend. I had come off antibiotics (which affect efficacy of birth control pills)from bronchitis and that illness caused my menstral cycle to become a bit off from normal, but it was a false alarm and it was with someone that I cared about deeply and vice versa. But he and I spoke about birth control from the very beginning when we became intimate. Waiting was a choice and taking precautions mattered.

"Investigate your hidden assumptions."-Cornel West