Spotting?

I’ve been really really lightly spotting light red/pink blood for about four days now it’s not spotting where there’s blood every time I go toilet its on and off. I’ve read that non penetration orgasms can even lead to spotting, sorry for tmi but I haven’t actually had an orgasm for 3 days could it still be that or if it was that would have stopped by now ?

* almost 36 weeks

* baby is still moving fine