Dating pregnancy after miscarriage?

Lauren

After my first miscarriage, I was told to wait one full cycle before trying. I absolutely hated that doctor and went to a different one for this pregnancy. My last period was October 8. I started miscarrying December 2 and stopped bleeding December 10. My new doctor told me to try again immediately. The problem is I have no clue when to test or anything. I'm not <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> but can someone give me an idea? Is it like my miscarriage was a period? My cycles are 35 days and I ovulate one cd 21 always.