Can someone please help me

I had a period on the 11th of September for 3 days with spotting a day or 2 before and after and then on the 17th September I thought I would do a hpt (I don’t know why) and there was a very faint line positive. I’m not due my next period until approx. the 9th October. On the 21st September I did another test first thing in the morning and it was a little darker but definately 2 lines. This morning I did another one and it was still faint, I thought it would’ve gotten a bit darker. I’m just so confused as to why a test would show positive when I’m still so far away from my next period 😔

If anyone is advice please give it because I am so confused, shocked and little anxious