Where's my period!?!?

Kristy
I know I should be looking for ovulation or a positive pregnancy test here but I had a miscarriage sept 26, had a period immediately and since then nothing! I'm on cd 41, the longest I've ever gone was 34 days. Did anyone have this happen? My doctor said since my levels were so low at the time of loss that I should go back to my regular schedule right away? I had a positive ovulation test at 9 pm on cd 17, by am it was negative..... nothing but bfn though??? How cma I ttc if I can't event get my peri!