Got pregnant with my tubes tied

OK ladies about a year ago I got pregnant and yes my tubes are tied after I gave birth to my twin boys and decided to get my tubes tied I lost that pregnancy and no it wasn’t in my tube. back in May I began to experience pregnancy symptoms but aunt Flo came but I only bled for three days I have had a 5 day cycle since I started back when I was 11. Well my period is two days late and I had two positive pregnancy test but the rest of them negative I’m so confused I’m very crampy like I’m going to start but I haven’t started. I’ve had a regular period Every since I’ve had my twins nothing has change. Has anyone experienced this at all can anyone please help me!!