I am so much confused !!!

I miscarriage on October 5th and already got my first period on November 4th. I got LH surge on CD 11 and bd right away. Only bd once during my fertile window. I got brownish pink CM on and off from 8dpo til 11dpo. Tested at 13dpo got BFN then got EWCM but mixing with little blood. No real sign of period or sign of pregnancy . I only have nausea since 8-9dpo.. some very mild cramps and lower backache. I am so much confuse and hopeless at the same time. I think we only need one to conceive... but :(