How do I know how many weeks pregnant I am if I got pregnant on the pill

[Crystalxuk]

How do you know how many weeks pregnant you are if you got pregnant on the pill? I don't know when I ovulated therefore I don't know when I got pregnant. I know I can wait for or my first scan but but I'd like to know if there is a way I can find out earlier

Did you test because you had symptoms? That might give you an estimation

You can try a digital clear blue test but it won't narrow down much if your more than 5 weeks.

I got a positive test and could only tell the midwife I was between 4 and 11, did a clear blue which put me at at least 5 weeks so they booked a scan which put me at 6.5 week (later adjusted again)

How long between coming off the pill and BFP? Did you bleed?

You normally have a withdrawal bleed when you come off the pill and then ovulate as you would if it were just a period. Count the first day of the bleed as day one. Ovulation will be estimated as day 14.