What you think ??

Na

Everyone around me act like they can’t see ..they keep asking are they positive.. what you think ladies the first two are from 9/9 and the last one is from today 9/11 .. my last menstrual was August 11 th and on Sunday I spotted ( the day I was supposed to get my period ) and today I spotted again and my hcg levels was 79 MUI/L yesterday when I got blood work done .. the doctor said I may have miscarried because they couldn’t see a sac on the ultrasound yesterday.. but I never bled out or anything that’s why I’m just so confused now .. I read usually you can’t see sacs until your 5weeks and more the ER doctor stated I’m between 3-4 weeks .. I’m very worried .. should I be ? And also this will be my 3rd baby if I am pregnant.. I need some uplifting I’m very sad right now 😢