Had iud taken out in sept 19 cause ttc and every month since last he had two periods until january only one lasted 7 days the app i use say im 3 days late when should i take a test and which is best most accurate thank u?

In a few days: Today's home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A urine test will give a reliable result by 3 weeks after sex (3 weeks after when conception might have been) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon.