Bfp then AF?

So last week, I took 3 tests; a clear blue, a FR and an Asda one. Each one had the faintest of lines, I posted them on here and most people said they looked positive. A few days later my period came, it lasted 3 days but was heavy and sore as my periods usually would be so couldn’t mistake it for implantation bleeding. This morning, I was emptying the bin in my bathroom and found this and there’s definitely a line. I know it’s a few days old but I’ve never had this happen to me before!

Anyone know what’s happening to me😭 ttc baby #1 since November so I’m so unsure of everything.

Thanks