I had a miscarriage on May 2019. My first symptom is sore breasts. Like really painful to the touch and then I missed my period. Do wait at least 10 days after your missed period to check. I am currently 12 weeks pregnant. I remember I checked every 3, 5 and 7 days after I've missed my period. Probably my hcg wasn't high enough yet to detect at that time. 2 weeks after I've missed my period, I tested 3 test kits then once I saw that they are positive, I immediately book a doctor's appointment to confirm again and to start on folic acid. 2 weeks after that then my morning sickness starts. Good luck and do not stress yourself ☺️