Clomid has been known to stay in the system for 6 weeks after administration, according to the Drugs website. On average, the half-life of Clomid is between 5 to 7 days. Clomid is a trade name for clomiphene, which is a drug used to treat infertility in women.
Clomiphene is taken orally according to a physician's directions, who will make adjustments depending on the patient's medical condition and response to the therapy, states WebMD. It has a high bioavailability, with about 90 percent of the dose administered absorbed into the system. After administration, clomiphene is primarily excreted via the feces, according to the Drugs website. If patients are able to conceive with the help of the drug, it is possible that clomiphene is still present in the system during early pregnancy.