I am 12 weeks postpartum. I haven’t started my period back. My husband and I have unprotected sex all the time ( using the withdrawal method and sometimes he will wear a condom) I tested negative on may 6th. Obviously we had sex after that and he didn’t pull out. I got kyleena IUD on may 15th. Is it possible I could have got pregnant within that week? My doctor didn’t do a pregnancy test because I hadn’t started my period yet. When the insert the IUD could they tell if you were pregnant?