help help help

I had gone to the hospital when I had barley found out I was pregnant due to the fact I was bleeding and I had a miscarriage, they did a vaginal ultrasound and told me I was 5 weeks and due on November 21, so I'm thinking I'm about 13 weeks and 6 days I went to the hospital due to a Pelvic pain I was having they say a ultrasound and said I was 11 weeks and 6 days. And I told them about the first ultrasound and the doc just told me to go with that. Should I go for the first ultrasound or the recently one they did?