Can’t feel my Strings

Victoria

So I’ve had my Kyleena iud for about 8 months, and my periods have been crazy, but I’ve never been late more than 2 days or missed one completely. Well I’m 4 days late. And I can’t feel my strings at all. I’m kind of freaking out because my bf doesn’t use condoms, we just pull out.. but I know there’s still a chance of getting pregnant. Idk, just need some advice I guess. My bf thinks taking a test would be pointless and that I should just go to a doctor but it’s Saturday and I can’t even make and appointment until Monday.