How many weeks do you think I am

Alexia

So I thought I was 8 weeks and a couple days pregnant but on the 12th of this month I was at the ER and they did a pregnancy test and it was negative . Well I started having symptoms last week and I tested on the 20th of this month and it was positive and also got it done at the hospital today and it’s still positive . How many weeks would I be since it was negative 2 weeks ago but last week was positive