how far along am i?

Allysa

my period was oct 1st thru 9th

my first wedding anniversary was the 14th.

i peed positive on november 15th

transvaginal ultrasound was november 21st.

the sac is measuring 6 weeks.

and she said the baby usually measures in a week behind at 5 weeks.

she said its too early to hear a heatbeat.

what date should i set my app at? my last menstral period? or six weeks?