Faint line on opk all the time

So I know it's not positive and you can have low levels for most of if not all of you cycle.

Before my 1st (and only so far) baby I would have blank white negatives and then a faint line getting darker over a couple of days, positive, then over 2 days go back to being negative.

The last few months I've had a constant faint line (not pregnancy test faint/squinter) very obvious but definitely negative. I've also had a series of faint positives that are being investigated - blood test tomorrow.

Not sure if having multiple back to back (3 weeks apart) early losses or retained products of conception (this is what my dr suspects).

Could this new constant Lh be linked to either? I'm very confused, will defiantly mention it to my dr when we have the follow up but wondered if anyone had any experience?

If it had always been like it I wouldn't be bothered it's just it's a recent thing alongside my faint pregnancy tests so was curious 🙈