How long after a chemical pregnancy will it take for pregnancy tests to show negative?

That might sound confusing..but basically my husband & I had sex on CD7, I have 28 day cycles so I typically do always ovulate around day 13/14. We got a little TOO in the moment and pre cum got in 😬😑. Fast forward to last night, I realized I was 2 days late. I figured it was just due to stress, so I brushed off the first 2 days. So we get a test on the way home from dinner...super super superrr faint pink line, off centered? My husband ran in for me, he got the 2 pack of tests where one is digital & one is the 2 lines (frer) so I did the digital next, which of course said NO. But I'm sure it didn't detect that insanely vfl. I sent him out for more this morning, and took one with fmu-the same super crazy vfl pops up, in the right spot this time. So I freaked out..panicked all day..anxiety through the roof because I just had my third and LAST baby. Well about an hour ago, I started bleeding..it was light but it's slowly but surely picking up. Was this a chemical pregnancy? If so, when is it normal for the line to completely go away when I test..so I know if this was my actual period, or a pregnancy I just had some bleeding with? I'm just so confused. Help!