Period lasted one day on clomid could i be pregnant?

Yes, it is possible to be pregnant even if you only had a one-day period while on Clomid. Clomid is often used to stimulate ovulation, and if you ovulated during that cycle, there's a chance of conception if you had unprotected intercourse around that time. However, a short period can also be a sign of other factors such as hormonal changes. It’s best to take a pregnancy test if you suspect you might be pregnant.