Need help!

Carrissa

Ok ladies I really need help, LMP was 09/23, FW was 10/05-10/10, got a flashing OPK on 10/07 BD same day, VVFL on 10/15-17 had light spotting 10/11-15, negative bloods 10/26 and no gestational sac seen on ultrasound same day. AF was due on 10/19. All pregnancy symptoms no sign of AF rearing her ugly head. Is it possible that it's too early for ultrasound ? I'm high risk and obese for my height and weight.