Pregnancy on IUD?

Amanda
So I am 5 days before missed period And few days after ovulation I spotted, have had mild to severe cramping, extremely bloated, boobs very sore, stomach bear csection sore. Called obgyn because I am on an IUD and I feel pregnant. She scheduled an ultrasound today and the tech saw a cyst on right and left ovary and a fluid filled sack in endometrium. She said that this was not pregnancy just a fluid sack because I am about to start my period. Also it was long oval looking and she said that no it wasn't pregnancy because they are perfectly round circles. I googled it when I left and that is not always the case. Any help here? Could this still be a pregnancy?