I probably sound crazy...

So I know this is going to sound nuts but I just need to get some different opinions.

So, about two days before my period was supposed to start I had really light and short “period”. Like only about a day long and didn’t even fill a panty liner. Fro

What I hear this could be implantation bleeding??

So, once This short, light bleeding had ended, I start realizing that my boobs were still tender and dense, and this usually goes away right when my period starts.

I have also been a bit nauseous and had some heart burn the past few days, which isn’t all that uncommon before AF, but it didn’t end with my weird bleeding thing.

So I waited about a day and I took a first response rapid result pregnancy test (the day my period was due) just to relieve my nerves I guess and it was negative. I know this sound crazy but I still feel different.

And my cat has been unusually touchy-feely, which she isn’t normally like at all. I’ve heard sometimes they know before we do.

I know this all sounds weird but i just want to know what you all think and how long. After implantation a pregnancy test would be positive.