Kyleena iud

Kat • ♈️🐾🇨🇴

So I’ve had the Kyleena for 6 months now and I woke up this morning with dark heavy blood all over my underwear and I’ve been having some cramping and I feel very tired and I also had unprotected sex in the past 2 weeks. Could this be implantation bleeding. If it is wouldn’t it be an ectopic pregnancy because I’m on the IUD birth control? Thank you!