I was only 3 weeks pg - so only about a week iykwim. I think i used first response & it showed up a very faint line - the more hcg in your system the darker the line & the further along you are.

But I've been pg 5 times & usually only used cheaper brands & they all worked.

The one I used that showed that early had 2 tests in it & I got it from woollies. AF wasn't due for another week. I'm almost 100% sure it was first response.

Good luck!