Unsure when period is due

Suann

Last period 3rd December didn't get end of month one I get them every 4weeks had bleeding 6th January misscarried 7th confirmed by scan and pregnancy tests etc on the 9th jan should of had period either yesterday or today nothing Monday had 3 faint positives then negative due to my urine being diluted and different brand test Friday done test seemed getting darker I've had no symptoms of any kind but then not are all the same I have 2 children and they were different in each way so now getting concerned have docs tomorrow for bloods gnna ask for blood hcg unsure if still early or what need some lovely reasurrence and advice please