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By Mayo Clinic staffWait for two weeks before taking an at-home pregnancy test, when pregnancy hormone levels are at a measurable level. Testing too soon could result in a false negative. Conversely, if you're using ovulation-inducing medication such as hCG, testing too soon could produce a false positive, due to the injected hCG still in your body.
Your doctor may instruct you to return for a blood test, which is more sensitive in detecting pregnancy hormones just after fertilization.
If you don't become pregnant, you might try IUI again before moving on to other fertility treatments. Often, the same therapy is used over three to six months to maximize chances of pregnancy. Your next IUI may be successful if you add or increase the dosage of ovulation-inducing medications.