3 week wait?

Lauren

Had my second <a href="https://glowing.com/glow-fertility-program">IUI</a> on 8/25 and expected to know in two weeks. Last Saturday came and no period. Took first response pregnancy test Sunday and BFN! Dr said they want me to wait until next Monday before doing blood test. It's not like I could have gotten pregnant after the <a href="https://glowing.com/glow-fertility-program">IUI</a>. I was ready for the 2WW but 3? Is there even a possibility I coukd be pregnant or is something wrong?