20 year old female and I've been having unprotected sex with my partner. I've had a Mirena IUD for almost two years now, but I'm worried I might be pregnant. I've had tender (but not swollen) breasts and nipples and because of my birth control I rarely ge

Can do preg. test. A urine pregnancy test, done correctly, gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), 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, and thus lead to a repeat test.