Has anyone gotten pregnant on the mini pill?

I am on the mini pill, and I have 3 pills left in my pack and AF hasn't shown yet and I have noticed breast tenderness. I decided to take a test this morning and I got a super super faint line, like you have to turn and really focus to see it. Obviously I have no idea when I o'ed, if I o'ed. we only had sex 1 time. I can't remember that date it was either January 7th, 8th, or 9th and of course we didn't pull out. I am definitely not going to believe I'm pregnant till get more of a darker line. Has this happened to anyone? I am not sure if I am pregnant or this cycle is just whacky.

Oh and I wasn't sure where to post this. So I hope this is an ok place!

My mum got pregnant with my sister while she was swapping from the mini pill to the full pill. I don't think the mini pill is as reliable as the pill, and even then some women get pregnant on the pill too!

What kind of test did you use? Maybe get a First Response Early Response test as they show up good lines.

I used first response. I am going to wait again and test sunday if I don't get AF. thats when I am supposed to start my new pack of pills