I just took a test and it came out positive, how far along would I be rn ?

I’ll just like to say this isn’t my first abortion and both pregnancies are due to plan b failing? This this it was 100% my fault since I took it on the third day,

I had unprotected sex the 24-25th of October, and my last period started the 12th of October, last pregnancy I aborted 6 weeks and like 4 days in. Someone on Reddit told me I was close to 4 weeks right now, is this true? I’m freaking out so bad, I know I have to abort again but I didn’t think I was this far in already, what’s the perfect time to medically abort.