Can spotting cause faint positive?

Hey y’all.

I started spotting earlier but by the time I realised I’d already peed in a cup and dipped my test in it, anyways the test was a light positive (no uninverted photo cause it’s hard to take one) so I’m curious if there’s something in my blood/spotting that can cause this?

I did have a light positive on a FRER last month and haven’t had a period since June, but since the first faint positive I must’ve had at least 10 negatives even in doctors office so I’m trying not to be too hopeful if it’s for no reason.

Thanks in advance 😊