Not sure what to do or think

Iv been tracking my period for like three years now in three different apps. They are usually pretty accurate!! Two of them say I’m 9 days late. One says I was supposed to start yesterday. I took a test and it was negative. I believe I experienced implantation bleeding last week I waiting a few days to test because that’s what everyone and the Internet said to do but it was still negative so now should I keep wondering if I’m pregnant or just move on?

I’m also super tired and using the bathroom more often than usual.