Clear Blue when to expect 3+

I am 4+4 and just did a clear blue test that said 2-3 pregnant. Just wondering if anyone has used theses and when can I expect to get 3+ ?

My HCG on Monday was 258.

It should come up with 3+ when your 5+ weeks pregnant.
I think I was 5+2/3when it showed up for DD3 :)

I think they go by when your period is due, not when you ovulate, so the week your AF is due, you would be 1 week pregnant.

I was expecting 2-3 and got it :) But I want to do it again next week but don't know when I should expect it to be 3+.

I have a scan next week due to my ectopic history. I have decided not to have more HCG testing as it makes me stress out and even if its not rising enough they will make me wait to have the scan so I'd prefer not to know.

I did read somewhere that it wont say 3+ until the HCG is well over 2500.