Can you tell that you're prego after 2 days?

No, it is typically not possible to confirm pregnancy just two days after conception. Most home pregnancy tests detect the hormone hCG, which usually becomes detectable about one to two weeks after conception, around the time of a missed period. Symptoms of pregnancy may also take time to appear, making it too early to tell definitively. For accurate results, it's best to wait until a missed period or follow up with a healthcare provider.