Does anyone spot/bleed at O or slightly after?

[brewco]

If so, how long does it normally last for you?

I am not temping but I am using OPK (wondfos) and got a positive OPK CD19. I started spotting/bleeding CD21, with slight cramping. This is not normal for me. FF says I could have O'd on CD20. I am still spotting today (CD22), so I am trying to decide if I should wait and see or if I should call my doctor and ask if this is normal for post-laparoscopy (which was 6 weeks ago and I've had 1 normal period since and totally stopped bleeding until now). We had good timing this month based on + OPK (we started early and had sex CD 10, 12, 14, 16, 18, 19), AF would be due end of next week if we didn't conceive this month, so I think it is too early for AF spotting.