4 weeks?

Hi all. Took a test today on CD 38 and did not expect to be pregnant! We’ve been having sex without protection for over a year but i haven’t been tracking until a few months ago. Now I’m trying to figure out how far along and potential due date. My line on the FRER is fairly light.

I also have PCOS and cycles anywhere from 30-40 days. The last two dates of intercourse were 10/17 and 10/10. I think I ovulated on 10/19. Had have I believe was ovulation cramping on one side for a few hours. This would mean I am at exactly 4 weeks and 13 DPO.

Does all that sound right? Worried my test should be darker.

TIA!!