How long did it take you for a strong positive

I tested 2 days early got a vvvfl, tested 1 day early got a slightly stronger vvfl. Didn’t test day AF was due (yesterday). Just tested today and it’s definitely stronger but still very light... when can I expect a blazing pink line?!

My only other positive hpt turned into a chemical pregnancy and it’s sad but I don’t feel like I can get excited yet...