Pregnant or not? Has anyone had the same problem??

My period is currently 23 days late. I took home pregnancy test at 9 days late and it was negative. Went and got a blood test at 10 days late and still came back negative. I'm currently at 23 days late and still no period. Did I test too early? Could there still be a possibility? I've had low abdominal pain ( not cramps) but still no period.