how far along were you when you got a positive?

So my period was due to start on the 30th and it was super light and only lasted 2 days. I didn’t even know I was bleeding until I wiped, and usually it’s really heavy and last 4 days. After I stopped bleeding my boyfriend and I had sex twice and only noticed bleeding when I wiped and then nothing else. I took a test and it was negative, but could I have taken it too early?

how far along do you have to be to get a positive if you’re pregnant?