I’m very worried I might be pregnant...

I experienced a tiny bit of bleeding shortly before my period should’ve come, but it was very dark, minimal, and only lasted for about a day. I think it may have been implantation.

I’m now experiencing symptoms similar to that of my last pregnancy. My boobs are starting to really hurt, swell, and bruise. One is even noticeably bigger than the other now. I’m also very tired and moody. I’ve taken a test but it’s come up negative so far. It’s quite early though, as implantation would’ve occurred less than a week ago, so I don’t trust the negative

As for birth control, I have been on the pill again for a little over a month but I really messed up. I missed two pills in the third week, and I assumed the directions for these were the same as my old pills. That being said, I stopped them, instead of finishing the pack and starting a new one like I was supposed to.

I plan on retesting in a week but I’m worried that even if I am it might not show up since it’s so early. Does anyone know how long it might take for pregnancy to show up on an at home test?